WO2017125699A1 - Sac pouvant contenir un matériau extrudable et procédé de fabrication dudit sac - Google Patents

Sac pouvant contenir un matériau extrudable et procédé de fabrication dudit sac Download PDF

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Publication number
WO2017125699A1
WO2017125699A1 PCT/GB2016/050129 GB2016050129W WO2017125699A1 WO 2017125699 A1 WO2017125699 A1 WO 2017125699A1 GB 2016050129 W GB2016050129 W GB 2016050129W WO 2017125699 A1 WO2017125699 A1 WO 2017125699A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
flexible
tube
neck
bags
Prior art date
Application number
PCT/GB2016/050129
Other languages
English (en)
Inventor
Paul Evans
Original Assignee
Paul Evans
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 Paul Evans filed Critical Paul Evans
Priority to PCT/GB2016/050129 priority Critical patent/WO2017125699A1/fr
Publication of WO2017125699A1 publication Critical patent/WO2017125699A1/fr

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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/10—Closing
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/20—Flexible squeeze tubes, e.g. for cosmetics
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3261—Flexible containers having several compartments
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3283—Cylindrical or polygonal containers, e.g. bottles, with two or more substantially axially offset, side-by-side compartments for simultaneous dispensing
    • B65D81/3288—Cylindrical or polygonal containers, e.g. bottles, with two or more substantially axially offset, side-by-side compartments for simultaneous dispensing composed of two or more separate containers joined to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • 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
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43123—Closing the ends of squeeze tubes, e.g. for toothpaste or cosmetics
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43129—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams said flat seams being transversal but non-orthogonal with respect to the tubular or hollow articles, i.e. oblique
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics

Definitions

  • This invention relates to a flexible bag often referred to as a 'chub' containing an extrudable material.
  • GB2455372 relates to a chub container comprising a flexible bag housed in a relatively rigid cartridge.
  • the flexible bag is formed with two compartments for retaining two components separately from one another.
  • the components are dispensed from the bags using an extrusion tool, commonly referred to as a caulking gun or sealant gun. Upon dispensation from the flexible bag the components react, normally producing a hardening effect.
  • This arrangement is unable to dispense multiple component materials in a ratio less than 3 : 1 and is therefore not suitable for dispensing epoxy, which comprises two components that require mixing in ratios of 1 : 1.
  • GB2322114 relates to a packaging system comprising two pouches formed from film or foil laminate each having neck pieces with semi-circular cross section.
  • the pouches are brought together at the neckpieces to form a conventional circular threaded neckpiece that can be threaded to a static mix nozzle.
  • the pouches are squeezed together by hand or are twisted together at their ends using a key.
  • W097/18144 relates to a two compartment container having two flexible 'D' shaped tubular housing each with a nozzle. The flat portions of each 'D' shaped housing are held side-by-side.
  • the containers are formed from laminated strips of plastics material folded into a tube with overlapping edges welded together. Longitudinal creases are formed in the tube wall to form the D shapes. The material is intended to be extruded from the container by squeezing the housings together.
  • DEI 0207763 relates to a two component cartridge. Each cartridge is formed as a blow-moulded tube. The components have cooperating cross-sectional shapes so that together they form a cylindrical cartridge with a circular cross-section. Each component is formed with an integral nozzle of the same cross-sectional shape to its main body. To assist in longitudinal compression, the wall of each component is formed with corrugations.
  • EP0831034 relates to a cartridge packing unit having semicircular compartments. Each compartment is formed from two pieces of foil welded together. The nozzle of each compartment is formed by a separate moulded piece that is welded to the foil. The longitudinal seams formed by this manufacturing process are comparatively weak and may fail during compression of the cartridge.
  • a method of forming a flexible bag for containing an extrudable material comprising:
  • a chub to be constructed in a form that when filled can cooperate with other chubs in manner similar to the designs of EP0831034 and DE10207763 but with a body formed from a single continuous integral piece of film.
  • the tube may take alternative shapes. It is preferred that after step ii, a shaper is inserted into the tapered portion of the tube and that at least one further bond is formed using the outline of the shaper as a guide.
  • the shaper has a body, and a relatively narrow elongate portion extending from the body that is inserted into the tapered portion and wherein the further bonds are formed on either side of the elongate portion.
  • the further bonds have a laterally extending portion to define a shoulder. It is preferred that an end face of the body of the shaper from which the elongate portion extends is used as a guide to form the laterally extending portion. It is preferred that a relatively rigid hollow neckpiece is inserted into an opening of the neck of the tube in order to provide greater rigidity to the neck.
  • first plane is substantially normal to the second plane in order to provide the bag with a substantially semi-circular shaped shoulder.
  • the bond formed between the resulting contacting surfaces of the flattened portion extends diagonally between a lateral edge of the tube and a longitudinal fold line in the flattened tube to provide the tube with a taper, most preferably towards one end of the tube.
  • a preferred method comprises providing a tube formed from a single integral continuous piece of flexible film material. This avoids the need for the flexible bag to include a longitudinal seam. Most preferably, the tube is formed using an extrusion process.
  • the bonds are preferably formed by heat sealing.
  • the method favourably further comprises removing a corner portion of the tube separated from the remainder of the tube by the bond formed in step ii, and further preferably also includes removing corner portions of the tube separated from the remainder of the tube by the bond formed in step iii.
  • the method comprises holding and/or sealing the flexible film together at an end away from the neck to form a closure.
  • Methods in which this may be achieved include, for example, by twisting the film forming the end of the tube together, drawings the film into folds and/or holding the film together with a fastener.
  • three tucks are formed in the tube wall with the opposing portions of the flexible film tube forming each of the three tucks sealed together to form the closure.
  • a container for holding a two part extrudable material comprising two flexible bags for holding respective first and second parts of the two part extrudable material; each bag having a peripheral wall comprised from a single integral piece of flexible film material, each bag having a body portion and a neck portion, and the bags being shaped as counterparts such that a wall of the respective body portions and neck portions of each bag are in contact with one another when the bags are held side by side; and wherein the peripheral wall of the body portion of each bag is held and/or sealed together to form a closure at the end of the bag opposite the neck.
  • each flexible bag defines, when filled, a relatively planar side. It is favourable that the body portion of each of the two flexible bags have, when filled, a semi-cylindric form with a planar side so that the two flexible bags when seated together about their planar side form a cylinder. Similarly it is preferred that the neck portion of each of the two flexible bags has a semi-cylindric form so that when the two bags are put together they form a substantially cylindrical neck.
  • the two flexible bags are held within a relative rigid cylindrical housing.
  • the container is provided with a relatively rigid, and preferably semi-cylindric, hollow neck piece that sits at least partly within the neck portion of the bag. This inhibits back flow of material into a space between the flexible bags and the inside of the cylindrical housing wall during extrusion.
  • the container comprises means that extends around the neck portions of the two flexible bags to retain the flexible bags together; a suitable example being a fastener such as a circlip.
  • each bag has a peripheral wall comprised from a single integral continuous piece of flexible film material. This allows the bags to be formed without longitudinal joins. It is preferred that the peripheral wall is folded and or comprises folds and/or tucks to form the closure; most preferably three tucks.
  • Figure 1 is a perspective view of a tubular film preform for manufacture of a flexible bag
  • Figure 2 is a perspective view of the preform shown partly cut away, rotated through 90 degrees and opened out;
  • Figure 3 is a perspective view of the preform showing the removal of the shaper following formation of the neck
  • Figure 4 is a perspective view illustrating the insertion of a neckpiece into the neck of the preform
  • Figure 5 is a perspective view of the preform of Fig 4 with the neckpiece fully inserted;
  • Figure 6 is a perspective view from the other end of the bag illustrating a tucking arrangement used to close the end of the tube;
  • Figures 7A - 7C are end on views illustrating formation of the closure of Fig 6;
  • Figure 8 illustrates a bi-chub assembly comprising flexible bags held together about their flat sides;
  • Figure 9 illustrates an end on view of the bi-chub assembly showing the closures of the flexible bags.
  • Figures 1-7 illustrate steps of a method of forming a chub for use with a container for holding an extrudable material.
  • Figure 1 illustrates an open ended tubular flexible film preform 1.
  • the preform 1 is formed through an extrusion process as a single continuous piece without longitudinal joins.
  • the preform 1, shown in Fig 1 lying flat, has an upper side 1A and lower side IB and opposing temporary longitudinal folds 1C ID there-between.
  • a heat seal 2 is formed between the upper side 1A and lower side IB that extends diagonally from an end of the preform 1 to longitudinal fold line 1C.
  • a corner portion IE (shown with broken line) of tube 1 formed by and separated from the remainder of the tube 1 by the diagonal heat seal 2 is cut away and may be discarded leaving the preform 1 with a tapered end IF.
  • the preform 1 is shown in the further figures rotated by ninety degrees so that the heat seal 2 sits uppermost.
  • the shaper 3 has a substantially semi-cylindric body 3A with a semi-cylindric neck 3B that extends from an end wall 3C of the semi-cylindric body 3 A.
  • the shaper 3 has a flat underside to define in part a semi-cylindric body 3 A and semi- cylindric neck 3B.
  • the shaper 3 is inserted through the non tapered end 1G of preform 1 (see Fig 1 ; shown in Fig 2 as partly inserted) and seated so that neck 3B of shaper 3 sits within the tapered portion IF and (preferably) extends through aperture 4 of the tapered portion IF at the end of the preform 1.
  • the shaper 3 is oriented within the preform 1 such that the heat seal 2 extends across the top of the curved wall of the semi-cylindric neck 3B finishing substantially at a junction between the end wall 3C and the curved wall of semi-cylindric body 3 A.
  • portions of film 5A lying above and below the spacer 3 on a first side of the semi-cylindric neck 3B are brought together and a heatseal 6A formed there-between that has a longitudinal portion that follows the outline of the semi- cylindric neck 3B and a lateral portion that follows outline of wall 3C.
  • This process is repeated with portions of film 5B above and below the spacer 3 on a second side of the semi-cylindric neck 3B to create heatseal 6B.
  • the remainder of portions 5 A 5B are cut away as shown in Figure 4.
  • the tapered end IF of the preform defines a semi-cylindrical neck 8 formed by the longitudinal portions of heat seals 6A 6B and semicircular shoulder 9 formed by the lateral portions of heatseals 6A 6B so mimicking the shape of shaper 3.
  • two new preferential longitudinal folds 1C ID' are formed that extend from the shoulder 9 to the open end 1G.
  • a hollow semi-cylindric neck piece 10 see Fig 4, is inserted into the semi-cylindric neck 8 to provide rigidity to neck 8.
  • the neck piece 10 comprises ribbing 10A across its curved surface that provides sacrificial material for the formation of a heat seal that secures the neck piece 10 into the neck 8.
  • the neck piece 10 may be secure further with the aid of adhesive.
  • Figure 5 illustrates the preform 1 with the neck piece 10 fully inserted within neck 8.
  • a capping means may be used to seal the exposed end of the neckpiece 10 until the extrudable material is ready to be dispensed.
  • the preform 1 is filled with extrudable material though open end 1G.
  • the chub preferentially adopts, by virtue of shoulder 9 and fold lines 1C ID', the semi-cylindric form of the shaper body 3 A so as to have, as viewed in Fig 6, a curved upper face and flat underside.
  • Figure 6 illustrates a preferred form of closure in which the film wall 1H at the open end 1G of the tube is drawn together at three points 11 (see Fig 7A) to form three tucks 12. A seal is formed between the portions of film wall forming each tuck (Fig 7B shows two tucks sealed) and between the tucks 12 to complete the closure.
  • Figure 8 illustrates a bi-chub assembly 20 for holding and separating a two part extrudable material, such as epoxy adhesive, that are reactive when mixed.
  • the assembly 20 comprises a first chub 30 that holds the first extrudable material and a second chub 40 that holds a second extrudable material.
  • the two chubs 30, 40 which are formed using the method described above, are arranged with the flat sides of their bodies and necks 8', 8" in contact so that together the chub assembly 20 has substantially cylindrical form.
  • the chubs 30 40 are preferably retained together by a circlip (not shown) that passes around the semi-cylindric neck pieces 10' 10" of the chubs 30, 40.
  • the flat sides of the two semi-cylindric neck pieces 10' 10" abut to provide a cylindrical connector for insertion into the neck of a relatively rigid cartridge which may form part of an enclosed type extrusion tool or be a separate component intended to house the bi-chub assembly 20 when used in an open type extrusion tool.
  • the bi-chub assembly 20 may be used with an enclosed type extrusion tool in substantially the same manner as a standard one component cylindrical chub, or housed within a relatively rigid open cylinder for use with an open type extrusion tool.
  • the chubs 30, 40 are compressed longitudinally by a piston of the rigid cartridge or extrusion tool to urge the extrudable material within each chub 30, 40 out through neckpieces 10' 10" whereupon they may be mixed together manually or preferably by passing through a static mixer attached to a neck of the rigid cartridge.
  • the relatively broad end face presented to the piston through tri-tuck 12 closure at end 1G reduces the likelihood of the chub collapsing in a non-uniform manner during extrusion.
  • one of the semi-cylindric neck pieces 10' 10" may be provided with a baffle (not shown) to equalise the flow rates of the two materials during compression of the component
  • seals 2, 6A and 6B may be of forms other than heatseals.
  • the heat seals 6A and 6B are formed with a longitudinal portion and a lateral portion so as to take a substantially right angled form to form a neck and shoulder, it is possible heat seals to take different forms.
  • the bags may further be formed without a distinct shoulder by forming the heatseals as diagonal lines, and/or using only a single heat seal to form a neck.
  • the closure of end 1G may comprise more than three tucks, or alternatively may take other forms to that described above such as a simple lateral fold or roll, and/or through use of a closing means such as a clip fastener.
  • the chub is filled with material through the open end 1G before said end is closed, it is possible that the chub may instead be filled through the neck opening 4; however this is less preferred because of long filling times.
  • the chub may be formed into shapes other than semi-cylindric.
  • the cross-section shape of the chubs may be of sectors with differing central angles that correspond to the ratio in which the extrudable materials are to be mixed. It is further possible that more than two chubs may be used together, where for example the extrudable material includes three or more components.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un tube plissé amélioré destiné à être logé dans une cartouche cylindrique rigide pour contenir un matériau à constituants multiples pour l'extrusion. Le procédé consiste à aplatir un tube de film souple dans un premier plan et à former une liaison entre les surfaces de contact pour former un cône à une extrémité du tube. Le procédé consiste ensuite à ouvrir et à aplatir la partie conique dans un second plan, et à former une autre liaison entre les surfaces de contact ainsi obtenues pour créer un col. Ce procédé permet une fabrication simple d'un tube plissé sans couture longitudinale, améliorant ainsi la résistance du tube plissé. Il permet également au tube plissé de posséder au moins une face relativement plate permettant une coopération avec d'autres tubes de forme similaire pour s'adapter dans une cartouche cylindrique.
PCT/GB2016/050129 2016-01-21 2016-01-21 Sac pouvant contenir un matériau extrudable et procédé de fabrication dudit sac WO2017125699A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2016/050129 WO2017125699A1 (fr) 2016-01-21 2016-01-21 Sac pouvant contenir un matériau extrudable et procédé de fabrication dudit sac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2016/050129 WO2017125699A1 (fr) 2016-01-21 2016-01-21 Sac pouvant contenir un matériau extrudable et procédé de fabrication dudit sac

Publications (1)

Publication Number Publication Date
WO2017125699A1 true WO2017125699A1 (fr) 2017-07-27

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH366965A (fr) * 1960-12-01 1963-01-31 Beranger Antoine Procédé pour fermer l'extrémité d'un récipient par une soudure en "Y" et dispositif pour la mise en oeuvre de ce procédé
FR2388662A1 (fr) * 1977-04-29 1978-11-24 Victor Metal Products Corp Machine de fabrication de recipients souples
DE4343985A1 (de) * 1992-12-22 1994-06-23 Hosokawa Yoko Kk Behälter, Verfahren zu dessen Herstellung, und Einspannvorrichtung für einen Kartuschenbehälter für eine Abgabepistole
WO1994019251A1 (fr) * 1993-02-26 1994-09-01 Norden Pac Development Ab Recipient de conditionnement a plusieurs tubes et son procede de fabrication
WO1997018144A2 (fr) 1995-11-14 1997-05-22 Courtaulds Packaging Limited Recipient a deux compartiments
EP0831034A1 (fr) 1996-09-03 1998-03-25 Henkel Kommanditgesellschaft auf Aktien Cartouche en matériau flexible
GB2322114A (en) 1997-02-18 1998-08-19 Paul Evans Pouches for dispensing two-part reactive chemicals
DE10207763A1 (de) 2002-02-23 2003-09-04 Fischer Artur Werke Gmbh Mehrkomponenten-Kartusche
GB2455372A (en) 2008-05-16 2009-06-10 Paul Evans Container opening arrangement for an extrusion gun

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* Cited by examiner, † Cited by third party
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CH366965A (fr) * 1960-12-01 1963-01-31 Beranger Antoine Procédé pour fermer l'extrémité d'un récipient par une soudure en "Y" et dispositif pour la mise en oeuvre de ce procédé
FR2388662A1 (fr) * 1977-04-29 1978-11-24 Victor Metal Products Corp Machine de fabrication de recipients souples
DE4343985A1 (de) * 1992-12-22 1994-06-23 Hosokawa Yoko Kk Behälter, Verfahren zu dessen Herstellung, und Einspannvorrichtung für einen Kartuschenbehälter für eine Abgabepistole
WO1994019251A1 (fr) * 1993-02-26 1994-09-01 Norden Pac Development Ab Recipient de conditionnement a plusieurs tubes et son procede de fabrication
WO1997018144A2 (fr) 1995-11-14 1997-05-22 Courtaulds Packaging Limited Recipient a deux compartiments
EP0831034A1 (fr) 1996-09-03 1998-03-25 Henkel Kommanditgesellschaft auf Aktien Cartouche en matériau flexible
GB2322114A (en) 1997-02-18 1998-08-19 Paul Evans Pouches for dispensing two-part reactive chemicals
DE10207763A1 (de) 2002-02-23 2003-09-04 Fischer Artur Werke Gmbh Mehrkomponenten-Kartusche
GB2455372A (en) 2008-05-16 2009-06-10 Paul Evans Container opening arrangement for an extrusion gun

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