US3371696A - Reclosable bags with rib and groove elements formed of different materials - Google Patents

Reclosable bags with rib and groove elements formed of different materials Download PDF

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Publication number
US3371696A
US3371696A US500652A US50065265A US3371696A US 3371696 A US3371696 A US 3371696A US 500652 A US500652 A US 500652A US 50065265 A US50065265 A US 50065265A US 3371696 A US3371696 A US 3371696A
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United States
Prior art keywords
elements
thermoplastic substance
interlocking
rib
bead
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Expired - Lifetime
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US500652A
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English (en)
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Ausnit Steven
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Individual
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Individual
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Priority to US500652A priority Critical patent/US3371696A/en
Priority to BE688057D priority patent/BE688057A/xx
Priority to SE14333/66A priority patent/SE343033B/xx
Priority to SE12287/71A priority patent/SE368169B/xx
Priority to GB47333/66A priority patent/GB1156170A/en
Priority to DK551366AA priority patent/DK114168B/da
Priority to NL6614980A priority patent/NL6614980A/xx
Application granted granted Critical
Publication of US3371696A publication Critical patent/US3371696A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S24/00—Buckles, buttons, clasps
    • Y10S24/30—Separable-fastener or required component thereof
    • Y10S24/50—Separable-fastener or required component thereof including member having elongated, resilient, interlocking face with identical, parallel cross-sections throughout its length

Definitions

  • This invention relates to resilient type fasteners for closing and sealing a pouch or other container and, in particular, to a flexible closure strip having an elongated bead formed thereon for improving the accessibility of grip flanges used in opening the resilient fastener.
  • Another object of this invention is to provide a flexible closure strip for use with a pouch or similar container which has first and second grip flanges of different lengths and which has a raised surface formed longitudinally along the upper extremity of the shorter grip flange, in order to make the grip flanges easily separable.
  • FIG. 1 is an isometric partially sectioned view showing a flexible closure strip and the associated interlocking elements and illustrating the positioning of a spacer bead formed at the upper extremity of a grip flange;
  • FIG. 2 i a partially sectioned isometric view similar to that shown in FIG. 1 for illustrating a different positioning of the raised bead provided at the upper extremity of the grip flange;
  • FIG. 3 is a sectional view of a device used for developing the raised members of the flexible closure elements shown in FIGS. 1 and 2;
  • FIG. 4 is a top view of the device shown in FIG. 3 for illustrating the relative position-ing of the indicated dies
  • FIG. 5 is a top view of a device similar to that shown in FIG. 4 and having an alternate arrangement of the re spective dies;
  • FIG. 6 is a sectioned view of a die having a'separate channel for developing the interlocking rib and groove element of a different thermoplastic substance from the sheeting to which it is attached.
  • a flexible closure strip in this application means a closure assembly which includes the interlocking closure elements, grip flanges and, in this case, a spacer or marker head.
  • the flexible closure strip per se may be formed separately and attached integrally to the body of the pouch or associated container, or, in the alternative, the flexible closure strip may be an integral portion of a con tinuous thermoplastic film which when lit and shaped will comprise a pouch or container having the indicated fastener elements disposed at the opening thereof.
  • Providing a flexible closure strip in effect, means providing raised elements on a thin continuous film surface. While the raised elements are usually formed integrally with the supporting film structure, it has become highly desirable to construct the raised elements of a thermoplastic substance having diiferent qualities from that of the supporting film, though still integral therewith.
  • the raised elements and the supporting film may have a distinct and different melt index or may involve specialized slip qualities.
  • the gel of the raised elements may be desirably distinguishable from those of the film structure.
  • melt index refers to the flow quality of the thermoplasti substance when subjected to a given force at a given temperature.
  • the slip quality refers to the lubricity of the thermoplastic substance and is important to the extrudability characteristic. Gel is an indirect reference to the rigidity of the thermoplastic substance; gel also affects the clarity of the thermoplastic material.
  • FIGS. 1 and 2 An example of the novel structure of this invention is shown generally in FIGS. 1 and 2 wherein a raised bead is provided at a grip flange for improving the accessibility of the pouch opening.
  • the flexible closure strips and 11 are provided with interlocking rib and groove elements 12 and 13 formed at the inner surface thereof.
  • the rib element 1.3 is provided with overhanging ridges 14 and 15 which will readily deform upon a pressure applied inwardly of the :losure strips 10 and 11. This deformation occurs at the restricted groove opening 16 of the groove element 12. Once the rib element penetrates the opening 16 and is received within an enlarged cavity 17, the deformed member assumes its unrestrained configuration and becomes locked therein at undercut engaging surfaces 18.
  • the interlocking rib and groove elements may be reopened or unlocked by the provision of upwardly extending grip flanges 19 and 20. By urging the flanges 19 and 20 outwardly of the pouch enclosure, the rib and groove elements may be peeled from the locked position shown in FIG. 1. This unlocking function occurs due to the direction in which the resulting force from the grip flanges is directed to the respective rib and groove elements.
  • the bead 21 is formed integrally with the flange 20 and has a rounded face 22 which extends inwardly of the associated flanges. This inward extension of the bead 22 holds the opposite flange 19 spaced from the inner surface of the flange 20. Also, the rounded face 22 provides a minimum contact area between the respective flanges for reducing the adhesive effects of the thermoplastic substance.
  • the size and positioning of the bead 21 at the inner surface of the flange 20 is not arbitrary. For instance, by moving the bead 21 closer to the interlocking rib and groove elements and by providing the rounded surface 22 to be sufficiently elevated from the face of the flange 20, an obstacle may be presented to the locking of the interlocking elements. In particular, the spreading of the flanges either purposely or with the elevated face 22 can reduce the locking qualities of the associated fastener elements.
  • the size and positioning of the bead 21 is related to the size and configuration of the interlocking structure to which it pertains.
  • FIG. 2 shows a flexible closure assembly substantially equivalent to that illustrated in FIG. 1 with the exception that a raised surface in the form of a bead 23 is disposed at the outer surface of the grip flange 20.
  • the raised bead of FIG. 2 does not provide a spacer function for spreading the grip flanges 19 and 20.
  • the raised bead 23 does provide a function which is identical to a function associated with the raised head 21 of FIG. 1. That function is that the raised beads 22 and 23 both provide means for improving the accessibility of the grip flanges and of the associated pouch or container.
  • this improved accessibility is achieved from the positioning of the raised bead 23 at the upper extremity of the grip flange 20.
  • the raised bead 23 is provided with a rounded face 24 which tapers to the upper edge 25 of the flange 20.
  • the opposing grip flange 19 extends above the flange 20 and hence above the raised bead 23 to improve the opening process.
  • the added accessibility derives from the fact that by placing the thumb at the curved surface 24 and sliding the thumbnail upward, the edge 25 is clearly distinguishable against the inner facing 26 of the grip flange 19. Therefore, the raised surface 24 of the head 23, together with the upwardly extending portion of the grip flange 19, cooperates to provide a means for gaining ready accessibility to the separate flanges and for opening the associated interlocking fastener elements.
  • FIGS. 3 through 6 show devices and illustrate methods for developing the raised elements as disclosed in FIGS. '1 and 2 at the surface of the flexible closure strips.
  • an extruder feeds a die body 28 which is provided with a main flow channel 29 comprising tapered wall portions 30 and straight wall portions 31 and opposing wall portion 31A.
  • the straight wall portions 31 and 31A define an outlet 32 which is used to form the film on the flexible closure supporting structure.
  • the opening 32 at the upper surface of the die body 28 may be, for example, as narrow as .006 of an inch or less, in order to yield a film of a thickness as low as .001.
  • the device of FIG. 3 provides a tributary channel 33 consisting of a right angle leg 34 and a parallel passage 35.
  • the right angle passage 34 conducts from an opening 36 formed at the main channel 29 and the parallel passageway 35 conducts to a die opening 37 formed within a die plate 38 which is mounted at the upper surface 39 of the die body 28.
  • the die body 28 is provided with a separate and distinct flow channel 40 which conducts from a source another thermoplastic substance having qualities which differentiate from the substance carried through the main channel 29.
  • the thermoplastic substance associated with the separate channel 40 is carried to a vertical leg 41 and to a die opening 42 formed within a die plate 43.
  • the die plate 43 like the plate 38, is mounted securely at the upper surface 39 of the die body 28.
  • the top view of the die plates 38 and 43 illustrates the relative positioning of the interlocking die structures and the association of the bead die with that of the main channel 29. It is apparent that the device of FIG. 4 is related to the structure shown in FIG. 2 in that the bead die is formed across the channel 29 opposite the cooperable interlocking member. It is also apparent that the raised members of the fastener structure are formed on the pouch or container film directly which may be extruded through a circular type main channel.
  • FIG. 5 is a top view of a device similar to that shown in FIG. 3 which has the bead die formed on the same side of the principal channel 29 as the interlocking rib groove members. This is the device utilized for developing the structure of FIG. 1 wherein the raised bead provides a spacer surface between the associated grip flanges.
  • FIG. 6 a die body is shown having features similar to that illustrated in FIG. 3 with the added feature of a means for forming the interlocking rib and groove elements of a thermoplastic substance which has distinctive features which distinguish the similar features of the film structure.
  • the die body 28 has a separate channel 45 which crosses the main channel within a connector sleeve 46 which connects the central part of the die body to the outer part of the die body.
  • the channel 45 extends through an elongated parallel passage 47 to the vicinity 48 of a die plate 49.
  • the main channel 29 carries the thermoplastic material, which forms the structural film of the pouch, past and around the connector sleeve or bridge member 46 to the narrow extruder opening 50. Simultaneously, the flow of a second thermoplastic substance through the separate passageway 45 develops the interlocking rib and groove elements within the die 51 and merges with the flow of the first thermoplastic substance at the extruder opening or outlet 50. In this way, the interlocking rib and groove elements can be provided simply and efficiently to have specialized properties distinct from properties of the film structure and which are formed integrally with that structure.
  • a resin with sufficient rigidity for greater strength can be directed at the interlocking elements,while a resin with greater clarity for the best optical properties can be directed at the film. Since these properties are usually not found in the same resin, this avoids the necessity of a compromised resin which would have only part of the desired properties for each part of the structure. For example, it has been found that the best suited resin for a profile construction will give a completely milky appearance when applied to a film, making the film relatively opaque.
  • Another advantage in separating the interlocking element material from that of the film structure is that of being able to impart (especially when combined with greater slip as mentioned above) a greater stiffness to these elements. This means that the interlocking elements can be made smaller and hence use up less raw material and hence make the whole structure more economical.
  • Yet another advantage of separating the resin channels is that of being able to give to each resin a different elongation factor.
  • a sheet with a flexible closure comprising:
  • said web portion being formed of a first thermoplastic substance having a given set of physical characteristics
  • said marginal portions having interlocking rib and groove elements extending longitudinally thereon for providing a lock therebetween
  • interlocking rib and groove elements being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance.
  • a sheet with a flexible closure comprising:
  • said web portion being formed of a first thermoplastic substance having a given set of physical characteristics
  • said marginal portions having interlocking rib and groove elements extending longitudinally thereon for providing a lock therebetween
  • said grip flange having an inner face and an outer face
  • a first of said grip flanges having a spacer ridge formed integrally at the inner face thereof and being disposed longitudinally thereon,
  • said spacer ridge being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance
  • a second of said grip flanges having an inner face contacting said spacer ridge and maintained thereby in spaced relation from said inner face of said first grip flange.
  • a container having a flexible closure including interlocking rib and groove elements comprising:
  • a pouch having front and back walls and a pouch opening at the upper edge thereof
  • interlocking elements disposed at the inner surface of said front and back walls for closing said pouch opening
  • said walls of said pouch being formed of a first thermoplastic substance having a given set of physical characteristics
  • interlocking rib and groove elements being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance.
  • a container having a flexible closure including interlocking rib and groove elements comprising:
  • a pouch having front and back walls and a pouch opening at the upper edge thereof
  • said walls of said pouch being formed of a first thermoplastic substance having a given set of physical characteristics
  • interlocking elements disposed at the inner surface of said front and back walls for closing said pouch opening and having a spacer bead formed above said interlocking elements for maintaining the upper edges of said front and back walls in spaced relation therewith,
  • said spacer bead being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance.
  • a container having a flexible closure including interlocking rib and groove elements comprising:
  • a pouch having front and back walls and a pouch opening at the upper edge thereof
  • said walls of said pouch being formed of a first thermoplastic substance having a given set of physical characteristics
  • interlocking elements disposed at the inner surface of said front and back walls for closing said pouch opening and having a spacer bead formed above said interlocking elements for maintaining the upper edges of said front and back walls in spaced relation therewith,
  • interlocking rib and groove elements being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance
  • said spacer bead being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance.
  • a sheet with an integral flexible closure comprising:
  • said web and marginal portions being formed of a first thermoplastic substance having a given set of physical characteristics
  • said marginal portions having an inner face and an outer face thereof
  • interlocking rib and groove elements disposed at the inner faces of said marginal portions for being locked by pressure applied at the outer faces thereof
  • interlocking rib and groove elements being formed entirely of a separate second thermoplastic substance having a different set of physical characteristics from that of said first thermoplastic substance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
US500652A 1965-10-22 1965-10-22 Reclosable bags with rib and groove elements formed of different materials Expired - Lifetime US3371696A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US500652A US3371696A (en) 1965-10-22 1965-10-22 Reclosable bags with rib and groove elements formed of different materials
BE688057D BE688057A (fr) 1965-10-22 1966-10-10
SE14333/66A SE343033B (fr) 1965-10-22 1966-10-20
SE12287/71A SE368169B (fr) 1965-10-22 1966-10-20
GB47333/66A GB1156170A (en) 1965-10-22 1966-10-21 Improvements in or relating to Material for use in the Manufacture of Bags
DK551366AA DK114168B (da) 1965-10-22 1966-10-21 Pose af plastfolie og med lukkeorganer.
NL6614980A NL6614980A (fr) 1965-10-22 1966-10-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US500652A US3371696A (en) 1965-10-22 1965-10-22 Reclosable bags with rib and groove elements formed of different materials

Publications (1)

Publication Number Publication Date
US3371696A true US3371696A (en) 1968-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US500652A Expired - Lifetime US3371696A (en) 1965-10-22 1965-10-22 Reclosable bags with rib and groove elements formed of different materials

Country Status (6)

Country Link
US (1) US3371696A (fr)
BE (1) BE688057A (fr)
DK (1) DK114168B (fr)
GB (1) GB1156170A (fr)
NL (1) NL6614980A (fr)
SE (2) SE343033B (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477634A (en) * 1967-10-18 1969-11-11 Ctp Ind Inc Bag and closure means therefor
US4363345A (en) * 1980-06-02 1982-12-14 Union Carbide Corporation Reclosable container
US4403991A (en) * 1977-11-14 1983-09-13 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4465486A (en) * 1977-12-27 1984-08-14 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4755177A (en) * 1977-12-27 1988-07-05 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4756628A (en) * 1985-11-08 1988-07-12 Kcl Corporation Reclosable flexible container having a downwardly depending cuff
US5022530A (en) * 1989-10-13 1991-06-11 The Dow Chemical Company Modified zipper elements for easy open containers
USRE33674E (en) * 1969-12-05 1991-08-27 Minigrip, Inc. Openable bag
US5057065A (en) * 1989-12-08 1991-10-15 Reynolds Metals Company Process for making draw tape bags with integrally formed draw tapes
US5067822A (en) * 1989-04-24 1991-11-26 Reynolds Consumer Products, Inc. Method of forming recloseable packages, profiles used therein, and packages produced thereby
US5100246A (en) * 1990-10-09 1992-03-31 Illinois Tool Works Inc. Pull bead and guide rails for easy open flexible containers
US5138750A (en) * 1991-05-13 1992-08-18 Dowbrands L.P. Zipper for reclosable thermoplastic bag
US5186543A (en) * 1991-03-04 1993-02-16 Illinois Tool Works Inc. Tear-open bag having guide strips
US5238306A (en) * 1989-05-19 1993-08-24 Reynolds Consumer Products, Inc. Method of producing a sealing system for a reclosable webbed-wall package, and system made
US5259904A (en) * 1992-05-08 1993-11-09 Minigrip, Inc. Oscillating grip strip for recloseable plastic bags and method and apparatus for making the same
US5415290A (en) * 1993-12-02 1995-05-16 Merkley; John R. Comic book protection cover system
US6071011A (en) * 1999-08-12 2000-06-06 Tenneco Packaging, Inc. Fill-through-the-top package
US20010017947A1 (en) * 1999-05-11 2001-08-30 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6286999B1 (en) 1999-05-11 2001-09-11 Pactiv Corporation Tamper-evident reclosable bag
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US20030198407A1 (en) * 2002-03-20 2003-10-23 Rehwinkel Gary E. Reclosable bags with tamper evident features and methods of mking the same
FR2863254A1 (fr) * 2003-12-03 2005-06-10 S2F Flexico Ensemble de fermeture pour sachets, sachet ainsi obtenu ainsi que procede et machine de fabrication
US20050138893A1 (en) * 2003-12-29 2005-06-30 Steven Ausnit Method and apparatus for making reclosable packages having slider-actuated string zippers
US20070180668A1 (en) * 2006-02-08 2007-08-09 Ackerman Bryan L Pouch with slider and grip members
US9624003B1 (en) * 2015-11-24 2017-04-18 Inteplast Group Corporation Bag with gripping bands
US20190185216A1 (en) * 2009-02-17 2019-06-20 Jonathan Edward Trollen Barrier device for storing a wet paint application device

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US3477634A (en) * 1967-10-18 1969-11-11 Ctp Ind Inc Bag and closure means therefor
USRE33674E (en) * 1969-12-05 1991-08-27 Minigrip, Inc. Openable bag
US4403991A (en) * 1977-11-14 1983-09-13 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4465486A (en) * 1977-12-27 1984-08-14 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4755177A (en) * 1977-12-27 1988-07-05 E. R. Squibb & Sons, Inc. Closures for open ended ostomy pouch
US4363345A (en) * 1980-06-02 1982-12-14 Union Carbide Corporation Reclosable container
US4756628A (en) * 1985-11-08 1988-07-12 Kcl Corporation Reclosable flexible container having a downwardly depending cuff
US5198055A (en) * 1989-04-24 1993-03-30 Reynolds Consumer Products, Inc. Method of forming recloseable packages, profiles used therein, and packages produced thereby
US5067822A (en) * 1989-04-24 1991-11-26 Reynolds Consumer Products, Inc. Method of forming recloseable packages, profiles used therein, and packages produced thereby
US5366294A (en) * 1989-04-24 1994-11-22 Reynolds Consumer Products, Inc. Recloseable package having recloseable profile strips with a heat barrier
US5238306A (en) * 1989-05-19 1993-08-24 Reynolds Consumer Products, Inc. Method of producing a sealing system for a reclosable webbed-wall package, and system made
US5022530A (en) * 1989-10-13 1991-06-11 The Dow Chemical Company Modified zipper elements for easy open containers
US5057065A (en) * 1989-12-08 1991-10-15 Reynolds Metals Company Process for making draw tape bags with integrally formed draw tapes
US5121997A (en) * 1990-10-09 1992-06-16 Illinois Tool Words Inc. Perforated tear strip for easy-open flexible containers
US5100246A (en) * 1990-10-09 1992-03-31 Illinois Tool Works Inc. Pull bead and guide rails for easy open flexible containers
US5186543A (en) * 1991-03-04 1993-02-16 Illinois Tool Works Inc. Tear-open bag having guide strips
US5138750A (en) * 1991-05-13 1992-08-18 Dowbrands L.P. Zipper for reclosable thermoplastic bag
US5259904A (en) * 1992-05-08 1993-11-09 Minigrip, Inc. Oscillating grip strip for recloseable plastic bags and method and apparatus for making the same
US5415290A (en) * 1993-12-02 1995-05-16 Merkley; John R. Comic book protection cover system
US20030072852A1 (en) * 1999-05-11 2003-04-17 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US7320545B2 (en) 1999-05-11 2008-01-22 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US8523437B2 (en) 1999-05-11 2013-09-03 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method
US20010017947A1 (en) * 1999-05-11 2001-08-30 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6286999B1 (en) 1999-05-11 2001-09-11 Pactiv Corporation Tamper-evident reclosable bag
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US6419391B2 (en) 1999-05-11 2002-07-16 Pactiv Corporation Reclosable bags having a tamper evident stepped member
US6439770B2 (en) 1999-05-11 2002-08-27 Pactiv Corporation Reclosable bags having a tamper-evident retaining member extending through a slider
US20030072502A1 (en) * 1999-05-11 2003-04-17 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6913387B2 (en) 1999-05-11 2005-07-05 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method
US20030096042A1 (en) * 1999-05-11 2003-05-22 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6575625B2 (en) 1999-05-11 2003-06-10 Pactiv Corporation Reclosable bags having a removable member encapsulating a slider
US20030113415A1 (en) * 1999-05-11 2003-06-19 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US7165887B2 (en) 1999-05-11 2007-01-23 Sargento Foods, Inc. Resealable bag for filling with food product(s) and method
US6663283B1 (en) 1999-05-11 2003-12-16 Pactiv Corporation Reclosable bags having a tamper-evident member extending over a zipper proximate to a slider
US6712509B2 (en) 1999-05-11 2004-03-30 Pactiv Corporation Reclosable bag having tamper-evident member attached to body panels along a line of weakness located below the rib and groove profiles of the bag zipper
US7086782B2 (en) 1999-05-11 2006-08-08 Sargento Foods, Inc. Resealable bag for filling with food products and method
US20060133700A1 (en) * 1999-05-11 2006-06-22 Cappel Craig E Tamper-evident reclosable bag
US6910806B2 (en) 1999-05-11 2005-06-28 Sargento Foods, Inc. Resealable bag for filling with food product(S) and method
US7008106B2 (en) 1999-05-11 2006-03-07 Pactiv Corporation Reclosable bag having tamper-evident member removable from the bag along a line of weakness located below the bag zipper
USRE39505E1 (en) * 1999-08-12 2007-03-13 Pactiv Corporation Fill-through-the-top package and method and apparatus for making the same
US6148588A (en) * 1999-08-12 2000-11-21 Pactiv Corporation Fill-through-the-top package and method and apparatus for making the same
US6279298B1 (en) 1999-08-12 2001-08-28 Pactiv Corporation Fill-through-the-top package and method and apparatus for making the same
USRE40284E1 (en) 1999-08-12 2008-05-06 Pactiv Corporation Methods of making and filling a fill-through-the-top package
US6071011A (en) * 1999-08-12 2000-06-06 Tenneco Packaging, Inc. Fill-through-the-top package
US7040808B2 (en) 2002-03-20 2006-05-09 Pactiv Corporation Reclosable bags with tamper evident features and methods of making the same
US7316641B2 (en) 2002-03-20 2008-01-08 Pactiv Corporation Reclosable bags with tamper evident features and methods of making the same
US20030198407A1 (en) * 2002-03-20 2003-10-23 Rehwinkel Gary E. Reclosable bags with tamper evident features and methods of mking the same
WO2005056408A2 (fr) * 2003-12-03 2005-06-23 S2F Flexico Ensemble de fermeture pour sachets, sachet ainsi obtenu ainsi que procede et machine de fabrication
US20070271741A1 (en) * 2003-12-03 2007-11-29 Philippe Eggermont Sachet Closure Assembly, Sachet Thus Obtained and Production Method and Machine
FR2863254A1 (fr) * 2003-12-03 2005-06-10 S2F Flexico Ensemble de fermeture pour sachets, sachet ainsi obtenu ainsi que procede et machine de fabrication
WO2005056408A3 (fr) * 2003-12-03 2005-10-06 S2F Flexico Ensemble de fermeture pour sachets, sachet ainsi obtenu ainsi que procede et machine de fabrication
US7302782B2 (en) * 2003-12-29 2007-12-04 Illinois Tool Works Inc. Method and apparatus for making reclosable packages having slider-actuated string zippers
US6941726B2 (en) * 2003-12-29 2005-09-13 Illinois Tool Works Inc. Method and apparatus for making reclosable packages having slider-actuated string zippers
US20050138893A1 (en) * 2003-12-29 2005-06-30 Steven Ausnit Method and apparatus for making reclosable packages having slider-actuated string zippers
US20070180668A1 (en) * 2006-02-08 2007-08-09 Ackerman Bryan L Pouch with slider and grip members
US20190185216A1 (en) * 2009-02-17 2019-06-20 Jonathan Edward Trollen Barrier device for storing a wet paint application device
US10906700B2 (en) 2009-02-17 2021-02-02 Jonathan Edward Trollen Barrier device for storing a wet paint application device
US9624003B1 (en) * 2015-11-24 2017-04-18 Inteplast Group Corporation Bag with gripping bands

Also Published As

Publication number Publication date
NL6614980A (fr) 1967-04-24
SE368169B (fr) 1974-06-24
DK114168B (da) 1969-06-02
BE688057A (fr) 1967-03-16
GB1156170A (en) 1969-06-25
SE343033B (fr) 1972-02-28

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