Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
  • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
  • A61F5/4404—Details or parts
• • 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
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
  • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
  • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
  • B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like 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
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
  • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
  • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
• • 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
  • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
• • 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
  • B29C66/1122—Single lap to lap joints, i.e. overlap 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
  • B29C66/133—Fin-type joints, the parts to be joined being flexible
• • 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
  • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
  • B29C66/4326—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making hollow articles or hollow-preforms, e.g. half-shells
• • 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
  • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
• • 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
  • B29C66/61—Joining from or joining on the inside
• • 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
  • B29C66/63—Internally supporting the 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
  • B29C66/70—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
  • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
  • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
  • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
  • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
• • 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
  • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
  • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
• • 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
  • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
• • 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
  • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
  • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
  • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
  • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
• • 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
  • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
• • 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
  • B29C66/71—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 composition of the plastics material of the parts to be joined
• • 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
• • 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
  • B29L2031/7148—Blood bags, medical bags

Definitions

• the present invention concerns collection bags for use by urine-incontinent or ostomy-operated individuals, said collection bags having at least one inlet opening and op ⁇ tionally one or more discharge openings.
• Collection bags of the above-mentioned type may be formed from a sheet tube or a sheet member which is folded cen- trally in longitudinal or transverse directions to form two outer sheet walls, the open ends or edges of the sheet tube or the sheet member being closed by joining, prefer- • ably by glueing or welding.
• the collection bag which has been used most extensively for many years is a bag consisting of two weldable sheets which, apart from openings for inlet and discharge, are welded together along their peripheries to form a cavity for the collection of urine and/or faeces.
• Collection bags of this simple design operate excellently in reality. However, such a bag is not particularly dis ⁇ crete, because when used it bulges very much and is very difficult to conceal for the user particularly in a filled or almost filled state. Furthermore, the collected human vastes, if just a little liquid, will have a great ten ⁇ dency to lap when the user moves about, thereby giving unpleasant sounds that may have a considerable inhibitory effect on the user.
• the first type of these "flatter” collection bags has two sheet walls optionally consisting of two weldable sheets which are welded together along the periphery in the same manner as collection bags of the simple design.
• the two sheet walls are additionally welded together at one or more spots or in one or more lines, e.g. a longitudinal central weld.
• This type of collection bag has a relatively flat shape which makes it easier for the user to conceal it under the clothes, and the flat shape of the bag as well as the division into chambers entail that the ten ⁇ dency of the bag contents to lap is reduced considerably.
• a collection bag of this type is known e.g. from DK pub ⁇ lished application 113 595.
• such a collection bag of the last-mentioned type does not bulge in one big bulge when the bag is filled or almost filled, but bulges instead in several small, but nevertheless considerable bulges, which imparts a very curved surface to the bag.
• This entails that the space occupied by the bag under the user's clothes is utilized very poorly r because the effective volume of the bag, i.e. the volume which the bag can contain, is considerably smaller than the volume or the space occupied by the bag under the user's clothes.
• Such bags therefore rarely have an effective volume which is particularly great, since, otherwise, the bag would take up unacceptably much space under the user's clothes.
• the spot or line welds are loaded by oppositely directed forces which will tend to tear the welds apart. If the bag is additionally subjected to an impact or a blow, this causes a pull in the spot or line welds, which additionally increases the risk of the weld being torn apart. It is a very unpleasant feeling for the user when a weld suddenly fails, and at worst tearing of a weld may cause the bag to leak.
• the second type of the "flatter” collection bags consists of four or more sheet layers, all of which have the same peripheral circumference, and which are welded together along their peripheries so that all the sheet layers, both the outer and the inner ones, have the same extent in area.
• the two central sheets moreover have a plurality of longitudinal welds arranged at intervals side by side. In the space each of the two intermediate sheets is welded together with the contacted outer sheet in longitudinal lines.
• the collection bag is thus divided into a plurality of longitudinal bag sections which are interconnected via openings in the intermediate sheets. Collection bags of this type are described in e.g. DK published application 135 928 as well as in the applicants' own DK patent speci- fication 149 402.
• the last-mentioned collection bag substantially has the same properties as the collection bags with walls welded together in one or more spots or lines, but the bag sur- face is somewhat less curved.
• the intermediate sheets thus form some intermediate walls which, when the bag is full, cause the outer sheet walls in the lines where the inter ⁇ mediate sheets are welded to these to be kept apart at a distance which is considerably smaller than the distance of the outer sheet walls between the weld lines, the inner sheets causing a transverse pull in the bag owing to their zigzag configuration, which necessarily causes the outer sheet walls to bulge between the longitudinal welds.
• this collection bag is therefore like- wise unacceptably small with respect to the space occupied by the bag under the user's clothes, and the bag is more- over very expensive to manufacture, because not only is considerably more sheet material to be used, but also a complicated welding tool as well as a manufacturing pro ⁇ cess which is time-consuming and difficult in terms of handling.
• the object of the present invention is to provide collec ⁇ tion bags which have an essentially flat or plane shape, and which satisfactorily prevent liquid contents from lapping, and which have "safe" welds, and which also have satisfactorily effective volumes with respect to the shape occupied by the bags under the user's clothes.
• a collection bag according to the invention com- prises one or more inner sheet members which are folded in a suitable configuration, e.g. in a longitudinal fold, a longitudinal double fold or a fold about themselves to form a tube.
• a collection bag according to the invention has one or more intermediate walls which are formed by the inner sheet member or members, and which determine the maximum distance between the two outer sheet walls in the spots or lines where the inner sheet member or members are attached to these, said inner sheet member or members causing no transverse tension in the bag.
• a collection bag according to the invention thus has a relatively flat shape and a surface which is substantially plane.
• the invention provides a collection bag which has an optimum volume with respect to the space occupied by the bag under the user's clothes.
• the fold or folds of an inner sheet member between the joints of the sheet member to the one and the other, re ⁇ spectively, of the two sheet walls are to be free.
• a free fold means that no other tension may occur in the fold than the tension caused by the sheet walls at the attach ⁇ ment points or lines to the inner sheet member.
• Two sheet members welded together along a side edge to form a free intermediate wall is thus considered as being one sheet member.
• the inner sheet member or members are preferably joined with the inner sides of the outer sheet walls by welding, but they may also be attached in another manner, e.g. by glueing, in particular hot melt glueing.
• the inner sheet member or members may additionally be attached to each other or to itself.
• the joints may be provided in spots or lines, preferably longitudinal lines.
• the inner sheet members may have perforations or holes through which the bag contents can pass. Such holes or perforations are advantageous in particular if the inner sheet members are attached to the outer walls at or in the lower edge of the bag.
• the outer sheet walls may have one or more inward folds in or at their side edges, as known from US patent specifica- tion 2 741 247. These inward folds may e.g. be provided as one or more pleats in one sheet wall.
• a collection bag according to the invention having such pleats or inward folds in or at the side edges thus have "high" edges, which entails that when filled the bag has substantially the same thickness along its entire surface extent.
• the collection bags according to the invention can more ⁇ over be manufactured in a relatively simple and inexpen- sive manner, and only such an amount of sheets as is func ⁇ tionally necessary is used.
• the invention moreover concerns methods for producing the collection bags of the invention, which methods are rela- tively uncomplicated and rapid and moreover do not present any serious difficulties in terms of handling.
• a f rst preferred embodiment of a collection bag. comprises an inner tubular sheet member folded longitudinally.
• the inner sheet member is welded to the one and the other, respectively, outer sheet in longi ⁇ tudinal rows of spots or lines.
• the inner sheet member may be tubular already before being welded to the outer sheets, or the sheet member may be folded so as to form the tube, while being welded to the outer sheets.
• a second embodiment of a collection bag according to the invention comprises an inner sheet member which, alterna ⁇ tely with lateral gaps, is welded to the inner sides of the one and other, respectively, of the outer sheet walls in longitudinal rows of spots or lines, the inner sheet member having a free double fold between each weld line when the bag is empty and thus flat.
• fig. 1 is a perspective view of a first preferred embodi ⁇ ment of a collection bag according to the invention, where the upper portion of the bag has been cut away, and where the bag has the shape it assumes when filled,
• fig. 2 is a cross-section of the embodiment shown in fig.
• fig. 3 is a cross-section of a variant of the first pre- ferred embodiment of a collection bag according to the invention
• fig. 4 shows the collection bag of fig. 3 after welding, where the bag has the shape it assumes when filled
• fig. 5 is a cross-section of a second variant of the first preferred embodiment of a collection bag according to the invention, seen at the welding situation,
• fig. 6 is a cross-section of a third variant of the first preferred embodiment of a collection bag according to the invention, seen immediately before the welding situation,
• fig. 7 is a cross-section of a second embodiment of a col- lection bag according to the invention in a half-filled, horizontal state, and
• fig. 8 is a cross-section of a third preferred embodiment of a collection bag according to the invention in a half- filled, horizontal state.
• the collection bag shown in figs. 1 and 2 consists of two outer sheet walls (1, 2), which have two welded side edges (3, 4) a lower welded edge (5) and an upper welded edge (not shown).
• the upper portion (not shown) of the bag has an inlet opening in which a tube member or the like is attached if it is a urine-incontinens bag, and if it is an ostomy bag, an adhesive layer, a coupling ring as de ⁇ scribed e.g. in the applicants' own patent publications WO 91/01118 and WO 91/01119, or the like is arranged on the outer side of the sheet wall along the periphery of the opening.
• a reflux valve is optionally arranged after the inlet opening in a generally known manner.
• the lower portion of the bag may include one or more discharge openings that can be opened and closed, e.g. by means of a valve system. Particularly useful is the valve system men ⁇ tioned in the applicants' own Danish patent application having the same filing date as the present application. The above-mentioned discharge openings have been omitted for clarity.
• the collection bag has an inner sheet member which has the shape_of a tube (6). The tube is welded to the inner side of the outer sheet wall (1) in two longi ⁇ tudinal weld lines (7, 8) and to the inner side of the outer sheet wall (2) likewise in two longitudinal weld lines (9, 10).
• Figs. 3 and 4 show in outline how a first variant of the collection bag shown in figs. 1 and 2 is produced, and thus illustrate the appearance of the characteristic inner sheet members when the bag is filled and empty, respec ⁇ tively.
• the inner sheet tube (16) consists of a sheet laminate of two different plastics materials (13, 14).
• the inner layer (14) is not weldable to itself at the given welding parameters, the outer layer (13) being welded to the inner sides (la, 2a) of the two outer sheet walls (1, 2). If the outer sheet walls (1, 2) of the bag consist of polyethylene, the sheet laminate may e.g.
• the sheet tube (16) being welded to the inner sides (la, 2a) of the outer sheet walls by hot welding.
• Another example is a bag having outer sheet walls (1, 2) of PVC, the sheet laminate being a laminate of PVC and polyethylene, the non-weldable layer (14) being constituted by the polyethylene layer, and the tube (16) being attached to the inner sides (la, 2a) of the outer sheet walls by high frequency welding. It ap ⁇ pears from fig.
• the welding tool (11) presses against the outer sides (lb, 2b) of the outer sheet walls, thereby causing the outer layer (13) of the tube to be welded to the inner sides (la, lb) of the outer sheet walls in the weld lines (17, 18, 19 and 20).
• the welding tool may optionally be designed such that the two outer sheet walls are simultaneously welded together along their peripheries.
• the collection bag is empty, and the tube (16) has two free longitudinal folds (15a, 15b) between the weld lines (17, 18) of the tube to the inner side (la) of one outer sheet wall and the opposed weld lines (19, 20) to the inner side (2a) of the other outer sheet wall.
• Fig. 4 shows the sec ⁇ tion of the collection bag after welding in a filled state, and it will be seen that the folds (15a, 15b) shown in fig. 3 are extended between their weld lines (17, 19) and (18, 20), respectively.
• Fig. 5 shows in outline how a second variant of the col- lection bag shown in figs. 1 and 2 is produced.
• the inner sheet tube (26) has inner and outer surfaces (26a, 26b).
• the outer surface (26b) is welded to the inner surfaces (la, 2a) of the outer sheet walls in longitudinal weld lines (27, 28, 29, 30) by means of the welding tool (21), which presses against the outer surfaces (lb, 2b) of the outer sheet walls, a welding preventing element (22) being arranged loosely, optionally temporarily, inside the tube (26), said element (22) preventing the inner side (26a) of the sheet tube from being welded to itself in the process.
• a welding preventing element (22) being arranged loosely, optionally temporarily, inside the tube (26), said element (22) preventing the inner side (26a) of the sheet tube from being welded to itself in the process.
• the sheet tube (26) has two free longitudinal folds (25a, 25b) which will be stretched when the finished bag is filled.
• the bag out ⁇ lined in fig. 5 is frequently produced in two steps, the outer sheet walls (1, 2) being welded together along their peripheries in a second welding step after the loosely arranged, welding preventing element (22), which in that case is just arranged temporarily, has been removed.
• the welding preventing element (22) may suitably be part of the welding tool.
• Fig. 6 shows in outline how a third variant of the collec ⁇ tion bag shown in figs. 1 and 2 is produced.
• the bag sec ⁇ tion is seen immediately before the welding process.
• the two outer sheet walls (1, 2) have interposed between them an inner sheet member (36) which is folded about itself in two longitudinal folds (35a, 35b).
• the sheet member (36) is retained in this position by means of a self-adhesive tape (32) which is partly in adhesive contact with the inner side (36a) of the sheet member along the longitudi- nal edges (36') of the sheet member and partly in adhesive contact with the inner side (la) of one outer sheet wall, so that the sheet member (36) and the tape (32) together form a tube.
• the tape (32) consists of an adhesive layer (33) and a layer of a non-adhesive material (34) which is non-weldable to the inner side (36a) of the sheet member at the welding parameters used.
• the welding tool (31) is pressed against the outer sides (lb, 2b) of the outer sheet walls and simultaneously releases heat, thereby attaching the inner side (la) of one outer sheet wall in two respective weld lines to the outer side (36b) of the inner sheet member along the edges (36') of the sheet member, and attaching the inner side (2a) of the other outer sheet wall in two other weld lines to the outer side (36b) of the sheet member.
• the two sheet walls (1, 2) may be attached to each other along their peri- pheries optionally in the same welding process.
• Fig. 7 shows an outline of a second embodiment of a col ⁇ lection bag according to the invention.
• the collection bag has two outer sheet walls (101, 102) which are attached to each other along their peripheries (103, 104) by e.g. glueing or welding.
• the two sheet walls (101, 102) have interposed between them one or more sheet members (106), and if more than one such sheet member is provided, the sheet members are attached to each other along their longitudinal edges in attachment lines (107, 108, 109; 110, 111) and thus constitute a sheet member which is attached alternately with lateral gaps to the inner sides of the one and the other, respectively, of the two outer sheet walls in the longitudinal attachment lines (107,
• the sheet member (106) has a free longitudi ⁇ nal double fold (112, 113) between each attachment line (107, 108, 109, 110, 111).
• Fig. 8 shows in outline a third embodiment of a collection bag according to the invention.
• the collection bag has two outer sheet walls (201, 202) which are attached to each other along their peripheries (203, 204) e.g. by welding or glueing.
• the two sheet walls may also be provided in another manner, e.g. by a sheet tube which is joined up ⁇ wardly and downwardly.
• one sheet wall has a double fold (212, 213) which folds into the bag when the bag is not filled.
• the two sheet walls (201, 202) have interposed between them a sheet member (206) which is attached along its side edges to the one and the other, respectively, of the two outer sheet walls (201, 202) in longitudinal attachment lines (207, 209), and which, when the bag is not filled, has a longitudinal fold (206).
• the bag is here shown in a half-filled, hori ⁇ zontal state, and it will be seen that the folds (206, 212, 213) are semi-stretched. When the bag is filled, the folds (206, 212, 213) are stretched completely and the bag maintains a plane surface.
• the bags shown in figs. 7 and 8 can be produced in several different ways, as mentioned before, e.g. by glueing or welding. If the bags are welded, one of the methods de ⁇ scribed in connection with figs. 3-6 may suitably be used, and the arrangement of the various sheets, welding pre- venting elements and the welding tool is of course to be adapted to the bag to be produced.

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• 1992
  • 1992-03-04 DK DK028992A patent/DK170519B1/da not_active IP Right Cessation
• 1993
  • 1993-03-03 AU AU37445/93A patent/AU665248B2/en not_active Ceased
  • 1993-03-03 JP JP5515256A patent/JPH07504341A/ja active Pending
  • 1993-03-03 DK DK93906460T patent/DK0630219T3/da active
  • 1993-03-03 DE DE1993611316 patent/DE69311316T2/de not_active Expired - Lifetime
  • 1993-03-03 AT AT93906460T patent/ATE153847T1/de not_active IP Right Cessation
  • 1993-03-03 EP EP19930906460 patent/EP0630219B1/en not_active Expired - Lifetime
  • 1993-03-03 WO PCT/DK1993/000077 patent/WO1993017643A1/en active IP Right Grant

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