WO2011055386A1 - Method of manufacturing a flexible packaging tube from flexible film or multilayer laminate - Google Patents

Method of manufacturing a flexible packaging tube from flexible film or multilayer laminate Download PDF

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Publication number
WO2011055386A1
WO2011055386A1 PCT/IN2010/000724 IN2010000724W WO2011055386A1 WO 2011055386 A1 WO2011055386 A1 WO 2011055386A1 IN 2010000724 W IN2010000724 W IN 2010000724W WO 2011055386 A1 WO2011055386 A1 WO 2011055386A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
multi
method
film
sealing
Prior art date
Application number
PCT/IN2010/000724
Other languages
French (fr)
Inventor
Ashok Chaturvedi
Original Assignee
Ashok Chaturvedi
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
Priority to IN2273DE2009 priority Critical
Priority to IN2273/DEL/2009 priority
Application filed by Ashok Chaturvedi filed Critical Ashok Chaturvedi
Publication of WO2011055386A1 publication Critical patent/WO2011055386A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F7/00Processes not otherwise provided for
    • B31F7/004Making tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36Bending and joining, e.g. for making hollow articles
    • B29C53/38Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805Joining 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
    • B29C65/481Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815Hot melt adhesives, e.g. thermoplastic adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50Joining 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
    • B29C65/5042Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50Joining 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
    • B29C65/5057Joining 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 positioned between the surfaces to be joined
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
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    • B29C66/0384Covering the joint by a coating material the coating material being in tape, strip or band form
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining 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
    • B29C66/4322Joining 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 by joining a single sheet to itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/72General 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
    • B29C66/723General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045Bending or folding combined with joining
    • B31F1/0048Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/0061Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of indefinite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045Bending or folding combined with joining
    • B31F1/0048Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/007Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles with multilayered walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F5/00Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/06Attaching together sheets, strips or webs; Reinforcing edges by adhesive tape
    • B31F5/08Attaching together sheets, strips or webs; Reinforcing edges by adhesive tape for reinforcing edges ; Applying a strip or tape to an edge, e.g. for decorating, for protecting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2795/00Printing on articles made from plastics or substances in a plastic state
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2795/00Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002Printing on articles made from plastics or substances in a plastic state before shaping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4855Joining 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 their physical properties, e.g. being electrically-conductive
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50Joining 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
    • B29C65/5007Joining 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
    • B29C65/5021Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/723General 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
    • B29C66/7232General 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 comprising a non-plastics layer
    • B29C66/72321General 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 comprising a non-plastics layer consisting of metals or their alloys
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    • B42D25/328Diffraction gratings; Holograms

Abstract

The present invention discloses a method of manufacturing a flexible packaging tube. The packaging tube has single layer or multi layer packaging film or multi-layer film laminate. An outer surface/layer (10) and an inner surface/layer (11) of the packaging film or multi-layer laminate are joined at a sealing/welding zone (12) by applying at least one of a hot-melt and hot-extrusion lamination layer in between the outer surface (10) and inner surface (11). The outer surface/layer (10) and inner surface/layer (11) may also be joined together using one of the methods of heat sealing, ultrasonic sealing, radio frequency welding, and Laser welding. Further, the sealing/welding zone (12) is protected by protective strips (14).

Description

METHOD OF MANUFACTURING A FLEXIBLE PACKAGING TUBE FROM FLEXIBLE FILM OR MULTILAYER LAMINATE

FIELD OF INVENTION

The invention relates to a method of manufacturing a tube made from flexible film or multilayer laminated film with registered / unregistered hot foil stamping and a squeezed tube made by said tube. Hot foil stamping / printing on flexible packaging film or multiple layer laminate web is used to incorporate decorative patterns, text, pictures or holographic images for aesthetics of a tubular product and to avoid counterfeiting or for any technical purpose, in any metallic shade or color. The hot foil stamped / printed subject may be raised, same level as web surface or depressed.

BACKGROUND OF THE INVENTION

Decorative packaging, currency bills, labels, plastic or coated board containers, Tee shirts, leather garments, wallet, key chains and many other objects used in different applications often display patterns, images or text in shining metal look or in specific color on their surfaces. These applications include a colored or metallic hot stamping foil in place of ink for printing onto a substrate. Surface of a metallic hot foil stamping / printing plate is cast or engraved to provide raised or depressed or same level text, pattern or image and held by a heated fixture.

The flexible packaging tubes made from extrusion process as available in prior art are produced by surface printings or pasting preprinted stickers for explaining the product specification or with decorative images. The method of manufacturing tubes by direct overlap sealing of the outer and inner layers of the web ends across it's width also exists in the prior art, but this method is applicable only when outer and inner layers materials are suitable for joining together by heat or other means. The present invention overcomes the shortcomings of the prior arts by facilitating a flexible packaging tube made from flexible film/laminated film, with hot foil stamping / printing registered / unregistered already done on the web surface besides other printing.

OBJECT AND SUMMARY OF THE INVENTION

As per the present disclosure flexible packaging tubes are made from single layer or multi layer laminated flexible, printed or unprinted, is hot foil stamped / printed with or without Hologram. The hot foil stamping / printing on the web is registered or un-registered with respect to pre-printed text, images or holograms.

The invention describes making flexible tubes with hot foil stamped web with subject raised, same level or depressed surface on the web.

The substrate with registered / unregistered hot foil stamping / printing is in the form of continuous flexible film web in rolls, either of single layer or made of multiple layer laminate. The film layer(s) are made from polymeric materials, woven or non-woven materials.

In one embodiment, the tube is manufactured by joining the edges of the film/laminate. This process explains the joining process of inner surface/layer with outer surface/ layer by applying at least one of a hot-melt or hot-extrusion lamination layer in between the outer and inner surfaces/layers. Subsequently, after any of such lamination, protective strips may be provided on the outer side, the inner side or on both inner and outer sides for covering the sealing area and providing additional strength to the tube structure.

In another embodiment, the tube is manufactured by joining inner surface/layer with the outer surface/layer of the film/laminate directly by at least one of the method of heat sealing, ultrasonic sealing, radio frequency welding and laser welding. This embodiment is possible when the outer and inner surface materials are suitable for said processes. Subsequently after any of such sealing, protective strips may be provided on the outer side, the inner side or on both inner and outer sides of the sealing area for covering the sealing area and providing additional strength to the tube structure.

The hot foil printing can be registered with respect to any print already existing on the film or laminate web.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The aforementioned aspects and other features of the present disclosure will be explained in the following description, taken in conjunction with the accompanying drawings, wherein:

FIGURES 1A, IB and 1C respectively illustrate a single layer flexible packaging film and a multi-layer laminated flexible packaging film, and registration of imprint as substrate for making the tubular product, according to an exemplary embodiment of the present disclosure.

FIGURE 2A illustrates joining of the edges of the film/multi layer laminated film where the joining of inner surface/layer with outer surface/ layer is done by applying a hot melt or hot extrusion lamination layer in between the outer and inner surface/layer, according to an exemplary embodiment of the present disclosure.

FIGURE 2B illustrates tubular packaging structure of FIGURE 2A with protective strip(s), according to an exemplary embodiment of the present disclosure.

FIGURE 3A illustrates joining of the edges of the single layer film multi layer laminated film, whereby joining process of inner surface/layer with the outer surface/layer of the film/laminate is performed by the method of heat sealing/ultrasonic welding/RF/laser welding, according to an exemplary embodiment of the present disclosure.

FIGURE 3B illustrates tubular packaging structure of FIGURE 3A with protective strip(s), according to an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

The embodiments of the present disclosure are described in detail with reference to the accompanying drawings. However, the present disclosure is not limited to these embodiments which are only provided to explain more clearly the present disclosure to the ordinarily skilled in the art of the present disclosure. In the accompanying drawings, like reference numerals are used to indicate like components.

Referring to FIGURES 1A and IB, a single layer packaging films (1) and multi-layer flexible packaging laminate (5) made of film materials (2), (3), (4) are illustrated according to an embodiment of the present invention. The single layer flexible film (1) is used in packaging application. Such film is made of one or more polymer or combinations of suitable polymers having only one layer. A multi layer laminate structure is shown as (5) where the flexible packaging film / material has one or more layers laminated made of materialized surface together to form a single identity. Here (2), (3) & (4) are shown as three single layer films laminated together. Each layer is made of suitable polymer or combination of polymers depending upon the properties desired from the laminate like moisture barrier, opacity, strength, puncture resistance, impact strength, seal ability, printability, UV protection etc. Further, in FIGURE 1C, registration of imprint on laminate (5) or on the film (1) is illustrated according to an embodiment of the present invention. The laminate (5) or the film (1) includes a hot foil stamping/ printing (8) provided thereon. For providing the hot foil stamping/ printing (8) at the accurate location on the film (1) or the laminate (5), one or more reference element (7) is already printed thereon. The reference element (7) act as a reference for scaling and enabling the hot foil stamping/printing (8) at accurate location with respect to an eye mark or any other pre-print on the film (1) or the laminate (5).

Referring now to FIGURE 2 A, where a tubular packaging structure (100) is shown according to an embodiment of the present invention. The tubular packaging structure (100) may be made by anyone of the film (1) or the laminate (5), as shown in FIGURES 1A and IB. As shown in FIGURE 2A, the tubular packaging structure (100) is made by joining an outer surface/layer (10) and an inner surface/layer (11) of the film (1) or laminate (5) at a sealing/welding zone (12) by applying a hot-melt or hot-extrusion lamination layer (13) in between the outer surface (10) and the inner surface (11). The hot-melt or hot-extrusion lamination layer (13) utilized for joining such an outer and inner layers of a laminate or a film, where both the layers are non-sealable to each other, and the user find it difficult to directly join the layer by heat/ultrasonic/RF/Laser or any other means.

Subsequently after such sealing, protective strip(s) (14) may be provided longitudinally at the sealing welding zone (12) for covering thereto and providing additional strength to the tubular packaging structure (100) and smooth transition for improved touch feeling on the outer side (10) thereof, as shown in FIGURE 2B. In FIGURE 2B, the protective strips (14) are on both of the outer side (10) and on the inner side (1 1) for providing additional strength to the tubular packaging structure (100). However, without departing from the scope of the present disclosure, the protective strip (14) may be provided only on the outer side (10) or on the inner side (1 1) as per requirement. The protective strip(s) (14) may be a single or multiple layer polymeric film, suitable to seal with the laminate or film surfaces. For example, the protective strip(s) (14) may be single layer film of polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polyvinyl chloride (PVC), Casted polypropylene (CPP), Ethylene vinyl alcohol (EVOH), polyamide etc., or may be multi layer film with the combination of two or more of any of the said films depending upon requirement. The protective strip (14) is a metalized or non-metalized layer in case of multi-layer film laminate.

Referring now to FIGURE 3 A, where a tubular packaging structure (100) is illustrated according to another embodiment of the present disclosure. In this embodiment, the tubular packaging structure (100) is made by joining the outer surface (10) and the inner surface (11) surfaces of the film (l)/laminate (5) at the sealing welding zone (12) by at least one of the method of heat sealing, ultrasonic sealing, radio frequency welding and laser welding. This embodiment is possible when the outer surface (10) and the inner surface (1 1) materials are suitable for sealing with each other.

Subsequently after such sealing, protective strip(s) (14) may be also be provided longitudinally at the sealing/welding zone (12) for covering thereto and providing additional strength to the tubular packaging structure (100) and smooth transition for improved touch feeling on the outer side (10) thereof, as provided in the FIGURE 2B. Similar to the embodiment of FIGURE 2B, the protective strips (14) of FIGURE 3B may also be provided on both of the outer side (10) and on the inner side (1 1) for providing additional strength to the tubular packaging structure (100). However, without departing from the scope of the present disclosure, the protective strip (14) may be provided only on the outer side (10) or on the inner side (1 1) as per requirement. The protective strip(s) (14) of FIGURE 2B is similar to FIGURE 3B and therefore not explained herein again for the sake of brevity.

Furthermore in an additional embodiment, where the outer side (10) and the inner side (1 1) of the laminate (5) or the film (1) are not sealable to each other, such at least one of the method of heat sealing, ultrasonic sealing, radio frequency welding and laser welding may be provided for temporarily holding the tubular packaging structure (100) at the sealing/welding zone (12) and subsequently providing protective strip(s) (14) longitudinally at the sealing welding zone (12) for covering thereto and providing strength to the tubular packaging structure (100).

Although the disclosure of a flexible packaging and its manufacturing method has been described in connection with the embodiment of the present disclosure illustrated in the accompanying drawings, it is not limited thereto. It will be apparent to those skilled in the art that various substitutions, modifications and changes may be made thereto without departing from the scope and spirit of the disclosure.

Claims

We claim:
1. A method of manufacturing a flexible packaging tube having single layer/multilayer packaging film or multi-layer laminate made of film materials (2), (3), & (4), printed or unprinted with or without hologram, said method comprises:
joining an outer surface/layer (10) with an inner surface/layer (1 1) of said single layer/multi-layer packaging film or multi-layer laminate at a sealing/welding zone (12) by a joining means.
2. The method as claimed in claim 1, wherein said joining means comprises applying at least one of a hot-melt and hot-extrusion lamination layer in between the outer surface (10) and the inner surface (1 1).
3. The method as claimed in claim 1, wherein said joining means comprises at least one of the methods of heat sealing, ultrasonic sealing, radio frequency welding, and Laser welding.
4. The method as claimed in claim 1, wherein said single layer /multi-layer packaging film or multi-layer laminate is printed by a hot foil stamping / printing using one or more reference elements (7), such as pre-printed mark, text, images or holograms, for accurate location on a web.
5. The method as claimed in claim 1, wherein said single layer/multi- layer packaging film or multi-layer laminate is printed by a hot foil stamping / printing without using any reference element (7) such as pre-printed mark, text, images or holograms.
6. A method of manufacturing a flexible packaging tube having single layer/multilayer packaging film or multi-layer laminate made of film materials (2), (3), & (4), printed or unprinted with or without hologram, said method comprises:
joining an outer surface/layer (10) with an inner surface/layer (1 1) of ' said single layer/multi-layer packaging film or multi-layer laminate at a sealing/welding zone (12) by a joining means; and
providing protective strips (14) longitudinally over the sealing/welding zone (12).
7. The method as claimed in claim 6, wherein said joining means comprises applying at least one of a hot-melt and hot-extrusion lamination layer in between the outer surface (10) and inner surface (1 1);
8. The method as claimed in claim 6, wherein said joining means comprises at least one of the method of heat sealing, ultrasonic sealing, radio frequency welding, and Laser welding.
9. The method as claimed in claim 6, wherein said single layer/ multi layer packaging film or multi-layer laminate is printed by a hot foil stamping / printing using one or more reference elements (7) such as pre-printed mark, text, images or holograms for accurate location on a web.
10. The method as claimed in claim 6, wherein said single layer/ multi layer packaging film or multi-layer laminate is printed by a hot foil stamping / printing without using any reference element (7) such as pre-printed mark, text, images or holograms.
1 1. The method as claimed in claim 6, wherein said protective strips (14) are provided longitudinally on either side or both sides over the sealing/ welding zones (12).
12. The method as claimed in claim 6, wherein said protective strips (14) is made of single layer/multi-layer film of PE, PET, PP, PVC, CPP, EVOH, and/or Polyamide.
13. The method as claimed in claim 6, wherein said protective strips (14) is a metalized or non-metalized layer, made of multi-layer film laminate of two or more film layers of PE, PET, PP, PVC, CPP, EVOH, and / or Polyamide.
14. A flexible packaging tube manufactured using a method as claimed in any of the preceding claims.
15. A method of manufacturing a flexible packaging tube substantially as herein described with reference to the accompanying drawings.
16. A flexible packaging tube substantially as herein described with reference to the accompanying drawings.
PCT/IN2010/000724 2009-11-04 2010-11-04 Method of manufacturing a flexible packaging tube from flexible film or multilayer laminate WO2011055386A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN2273DE2009 2009-11-04
IN2273/DEL/2009 2009-11-04

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CN103788497A (en) * 2012-10-26 2014-05-14 中国石油化工股份有限公司 Preparation method of polypropylene resin composition for high temperature boiling CPP film
CN103788497B (en) * 2012-10-26 2016-07-06 中国石油化工股份有限公司 A kind of manufacture method of the polypropylene resin composite of high temperature steaming CPP thin film

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