WO2008000251A1 - Procédé de fabrication par extrusion d'un bâton constitué d'un matériau moussable, dispositif d'extrusion pour mettre en œuvre le procédé et produit mousseux - Google Patents

Procédé de fabrication par extrusion d'un bâton constitué d'un matériau moussable, dispositif d'extrusion pour mettre en œuvre le procédé et produit mousseux Download PDF

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Publication number
WO2008000251A1
WO2008000251A1 PCT/DE2007/001164 DE2007001164W WO2008000251A1 WO 2008000251 A1 WO2008000251 A1 WO 2008000251A1 DE 2007001164 W DE2007001164 W DE 2007001164W WO 2008000251 A1 WO2008000251 A1 WO 2008000251A1
Authority
WO
WIPO (PCT)
Prior art keywords
needles
strand
outlet opening
extrusion die
holder
Prior art date
Application number
PCT/DE2007/001164
Other languages
German (de)
English (en)
Inventor
Friedrich Priehs
Original Assignee
Friedrich Priehs
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 Friedrich Priehs filed Critical Friedrich Priehs
Publication of WO2008000251A1 publication Critical patent/WO2008000251A1/fr

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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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1885—Forming the rod for cigarettes with an axial air duct
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0237—Filter rod forming processes by extrusion
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0258—Means for making grooves
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/066—Use of materials for tobacco smoke filters characterised by structural features in the form of foam or having cellular structure
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/25—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
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B29L2031/14—Filters
    • 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
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • 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
    • B29L2031/7414—Smokers'' requisites, e.g. pipe cleaners
    • B29L2031/7416—Smokers'' requisites, e.g. pipe cleaners for cigars or cigarettes
    • 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
    • B29L2031/755—Membranes, diaphragms

Definitions

  • the invention relates to a method for producing a strand formed from a foamable material by extruding the material under pressure through an extrusion die with an outlet opening from which the material emerges under foaming and forms the strand.
  • the invention further relates to an extrusion apparatus for carrying out the method and to a foam product cut to length from an extruded strand of foamed material.
  • any shapes of the strand can be realized by the extrusion die.
  • the extrusion die can have a circular-cylindrical, square or polygonal cross-section and can also be designed as a flat die.
  • the present invention has for its object to produce a strand formed from foamable material by extrusion, which has improved application possibilities due to defined properties.
  • the foamed material strand which is preferably a solid strand. Since the material foams on exiting the exit opening and thereby also collapses stochastics, longitudinal channels are formed which do not extend in a straight line through the foamed strand, but in an irregular meandering shape.
  • the foamed from the strand of foamed material foam product according to the present invention therefore has in the longitudinal direction of the strand formed through channels, which extend in the longitudinal direction meandered through the cross section of the strand.
  • the inventive method allows for the first time the formation of defined longitudinal channels in a foamed strand of material, so that in particular products can be formed by cutting from the material strand, which can be used for example as a smoking product usable because they have a low due to the longitudinal channels and beyond defined reproducible draw resistance ,
  • self-smoking products tobacco products
  • auxiliary products which can be used for smoking, such as, in particular, cigarette or pipe filters, which can also be inexpensively produced from paper foam or a similar material, with or without tobacco content. Since the longitudinal channels formed extend in irregularly undulating form through the strand, the desired filter effect is achieved by the material, because the gas flow passes through the longitudinal direction of the filter due to the serpentine longitudinal channels in intensive contact with the filter material.
  • the inventive method allows adjustment of the cross section of the longitudinal channels by the needles are axially displaced within the extrusion die. The further the needles are pushed into the region of the outlet opening, the less the cross section of the channels in the foaming material narrows after leaving the extrusion die. If, in extreme cases, the needles terminate in the plane of the outlet opening or even slightly downstream thereof, the cross section of the longitudinal channels is essentially determined by the cross section of the needles, since the foamable material outside the extrusion die expands substantially radially outward during foaming. In contrast, if the needles are positioned so as to be spaced apart from the orifice, foaming of the material within the extrusion die will result in radially inwardly directed pressure, thereby narrowing the longitudinal channels.
  • the distance of the ends of the needles from the feed opening forming a plane must be kept so small that foaming within the extrusion nozzle does not lead to closure of the longitudinal channels.
  • the controlled design of the longitudinal channels can be made even safer by the fact that located in the region of the outlet opening free ends of the needles are formed as tips, so tapered tapered.
  • the needles are conveniently attached to a common bracket.
  • the common support can be inserted into the extrusion die, so that it is flowed around by the material of the extrusion die. Alternatively, it is possible to press the material obliquely or perpendicular to the axis of the holder only in the region of the needles in the extrusion die. In this case, the common support is easily accessible and can be kept largely free of the foamable material.
  • the insertion of the common holder so into the extrusion die, that the holder is at least partially flowed around by the material brings with it the advantage of a simpler flow guidance for the foamable material with it.
  • the holder is formed with a tip tapering towards the outlet opening so as to assist the joining of the material streams into a desired solid strand.
  • the needles may preferably protrude from the conical surface of the tip of the holder.
  • the foam product produced according to the invention which is formed by cutting from an extruded strand, preferably has at least three tortuous longitudinal channels.
  • the longitudinal channels formed according to the invention preferably have a cross-section that is constant in the longitudinal direction.
  • foamable materials such as starch, cellulose, paper fibers, other fibrous materials, e.g. are mixed with starch, and mixtures of these materials as well as foamable metals in question.
  • Preferred foam products according to the invention are formed from tobacco material and constitute a smokable product.
  • so-called film tobaccos or tobacco dusts can also be used.
  • the smokable products can be made in the form of cigarettes, cigarillos and cigars.
  • the foam product according to the invention can also be designed as a filter through which it can flow, in particular as a filter for tobacco smoke, as used for cigarettes or pipes.
  • a foamed product according to the invention can be designed as a filter, membrane or degassing element of any foamable material which has a sufficient cohesion as a foamed strand.
  • a cigarette filter produced according to the invention can be produced from inexpensive paper foam and / or cellulose foam. He may possibly be provided with a proportion of tobacco, whereby the acceptance of the filter for many smokers is increased, as in this case, the filter is a tobacco product. In this case, it is possible to dispense with a paper cover sheet which covers the jacket wall of the filter, as is usual for today's acetate filters.
  • An extrusion apparatus suitable for carrying out the method according to the invention has a cylindrical extrusion nozzle with an outlet opening and is characterized by needles projecting into the cylindrical extrusion die, which are fastened to a holder, the needles protruding from the holder in the axial direction of the outlet opening.
  • a guidance of the material flow according to the method according to the invention is provided so that the foaming material flows around the needles, wherein the needles are positioned so that the longitudinal channels are formed according to the method according to the invention.
  • Figure 1 - a schematic view of an insert formed
  • FIG. 3 shows a front view of the extrusion nozzle with the needles inserted into the extrusion nozzle, which are surrounded by a foamable material
  • Figure 4 - a schematic representation of the foamable material within the extrusion die and after exiting the outlet opening of the extrusion die.
  • FIG. 1 shows, in a side view, needles 1, which are inserted into bores 2 of a common holder 3 and fastened there, for example by gluing with a temperature-resistant adhesive.
  • the common holder 3 consists of a cylindrical base body 4 with a circular cross-section, which is formed to its front end by a conically tapered jacket wall 5 to a conical tip 6.
  • the needles 1 protrude out of the common holder 3 in the region of the conical jacket wall 5 aaxially.
  • the common holder 3 is completed by an attached to the cylindrical base body 4 head part 7 with a larger diameter to an insert 8, which is inserted into an extrusion die 9, as shown in Figure 2.
  • the extrusion nozzle 9 is cylindrical and thus has a cylindrical channel 10 which terminates at the free end of the extrusion nozzle 9 in an outlet opening 11 which forms a plane 12 perpendicular to the longitudinal axis.
  • the cylindrical channel 10 has a stepped diameter enlargement 13 and continues with a broadened channel 14 in the direction of a feed device (not shown), which supplies the foamable material under pressure to the extrusion nozzle 9.
  • the insert 8 thus becomes annular from the extrudate, which has already been partly built up. can be foamed, flows around and exits through the outlet opening 11.
  • the needles 1 terminate in the region of the outlet opening 11 with free ends 15, which are formed as conical tips 16.
  • the arrows V shown in Figure 2 illustrate that the insert 8 is mounted axially displaceable within the extrusion die 9, so that the distance of the tips 16 of the needles 1 from the plane 12 of the outlet opening 11 is adjustable, the needles 1 preferably in a common plane , which is parallel to the plane 12 of the outlet opening 11, terminate.
  • the needles 1 it is also conceivable to arrange the needles 1 at different distances from the outlet opening 11 in order to produce channels of different sizes in the foamed product, if desired.
  • FIG. 3 shows in plan view the outlet opening 11 of the extrusion nozzle 9, which is filled with foaming material 17 on account of the production process. It can be seen that the material 17 completely flows around the needles 1 and thus forms a fully cylindrical strand, except for longitudinal channels formed by the needles 1.
  • the material 17 is under pressure within the extrusion die and therefore expands only slightly. At the exit from the outlet opening 11, the material expands and expands radially considerably. After a certain distance E, the expansion ends and the foamed material begins to collapse, so that the diameter of a strand 18 forming outside the extrusion nozzle 9 decreases to a final diameter.
  • a longitudinal channel 19 is formed in the strand 18 for each needle 1.
  • the longitudinal channels have a substantially constant free cross-section - At least in the region of the final cross-section of the strand 18 - on lose by numerous Kollableitersvorrud the cooling expanded foam material 17 but their rectilinear formation and run in the strand 18 irregularly meandering, resulting in many three-dimensional changes in direction of the longitudinal channels 19.
  • the foam product according to the invention which is formed by cutting from the cooled strand 18, thus has irregularly serpentine longitudinal channels 19, which is particularly advantageous for the formation of the product as a filter material through which a gas flows in the longitudinal direction.
  • the longitudinal channels 19 are produced in a defined manner in the production of the strand 18 and that the cross section of the longitudinal channels 19 can be controlled by adjusting the insert 8 with the needles 1 within the extrusion die 9. It can thus produce a material with a defined flow resistance in the axial direction without any rework and endless.
  • the number of longitudinal channels 19 produced can be selected arbitrarily within the available cross section of the strand 18 or of the product produced therefrom.
  • the present invention has its practical significance, in particular for strands having a final diameter of less than 30 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'objectif de l'invention est de fabriquer un bâton (18) constitué d'un matériau moussable (17) par extrusion du matériau (17) sous pression, par l'intermédiaire d'une buse d'extrusion (9) munie d'une ouverture de sortie (11), de laquelle le matériau (17) sort en moussant et forme le bâton (18). À cet effet, des aiguilles (1) sont insérées dans la buse d'extrusion (9), lesquelles sont contournées par le matériau (17) et se terminent de telle manière dans la zone de l'ouverture de sortie (11) que, lors du moussage dans l'ouverture de sortie (11) et en aval de celle-ci, les canaux longitudinaux (19) formés par les aiguilles (1) ne sont plus fermés. Les canaux longitudinaux (19) sont réglables dans leur section transversale libre. Des produits préférés fabriqués selon le procédé sont des filtres pour des produits à fumer, en particulier des cigarettes et des produits mousseux comprenant du tabac, pouvant être fumés.
PCT/DE2007/001164 2006-06-29 2007-06-28 Procédé de fabrication par extrusion d'un bâton constitué d'un matériau moussable, dispositif d'extrusion pour mettre en œuvre le procédé et produit mousseux WO2008000251A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006030414.4 2006-06-29
DE102006030414A DE102006030414A1 (de) 2006-06-29 2006-06-29 Verfahren zur Herstellung eines aus einem schäumbaren Material gebildeten Strangs durch Extrusion, Extrusionsvorrichtung zur Durchführung des Verfahrens und Schaumprodukt

Publications (1)

Publication Number Publication Date
WO2008000251A1 true WO2008000251A1 (fr) 2008-01-03

Family

ID=38596428

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Application Number Title Priority Date Filing Date
PCT/DE2007/001164 WO2008000251A1 (fr) 2006-06-29 2007-06-28 Procédé de fabrication par extrusion d'un bâton constitué d'un matériau moussable, dispositif d'extrusion pour mettre en œuvre le procédé et produit mousseux

Country Status (2)

Country Link
DE (1) DE102006030414A1 (fr)
WO (1) WO2008000251A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050769A1 (de) * 2011-05-31 2012-12-06 Sven Pracht Filterelement und Filter für Rauchwaren sowie ein Verfahren zum Herstellen des Filterelementes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427371A (en) * 1964-12-29 1969-02-11 Monsanto Chemicals Process and apparatus for extruding foamed articles free from warping
US3941157A (en) * 1974-07-24 1976-03-02 Barnett Louis H High strength multiple passageway plastic conduit
US4752516A (en) * 1981-07-15 1988-06-21 Corning Glass Works Apparatus for high speed manifolding of honeycomb structures
WO1991003372A1 (fr) * 1989-09-05 1991-03-21 Ametek Planche en mousse d'epaisseur variable
EP0744904A1 (fr) * 1995-01-28 1996-12-04 H.F. & Ph.F. Reemtsma GmbH & Co Procede de production d'un produit de tabac a fumer
US20010027819A1 (en) * 1998-08-10 2001-10-11 Specialty Silicone Fabricatiors, Inc. Single lumen to multiple lumen transition catheter and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427371A (en) * 1964-12-29 1969-02-11 Monsanto Chemicals Process and apparatus for extruding foamed articles free from warping
US3941157A (en) * 1974-07-24 1976-03-02 Barnett Louis H High strength multiple passageway plastic conduit
US4752516A (en) * 1981-07-15 1988-06-21 Corning Glass Works Apparatus for high speed manifolding of honeycomb structures
WO1991003372A1 (fr) * 1989-09-05 1991-03-21 Ametek Planche en mousse d'epaisseur variable
EP0744904A1 (fr) * 1995-01-28 1996-12-04 H.F. & Ph.F. Reemtsma GmbH & Co Procede de production d'un produit de tabac a fumer
US20010027819A1 (en) * 1998-08-10 2001-10-11 Specialty Silicone Fabricatiors, Inc. Single lumen to multiple lumen transition catheter and method

Also Published As

Publication number Publication date
DE102006030414A1 (de) 2008-01-03

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