Classifications

• • 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
  • 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
  • B65D33/255—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 being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/24—Details
  • A44B19/26—Sliders
  • A44B19/267—Sliders for slide fasteners with edges of stringers having uniform section throughout the length thereof
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/24—Details
  • A44B19/36—Means for permanently uniting the stringers at the end; Means for stopping movement of slider at the end

Definitions

• the present invention relates to reclosable fastener assemblies, such as the kind that is useful for sealing thermoplastic bags. More specifically, the present invention relates to such a fastener assembly which employs a slider by which the fastener assembly is opened and closed, and which provides a visual indicator of when the slider is in its closed position.
• Reclosable fastener assemblies are well known in the art, most commonly for use in sealing thermoplastic bags. Such fastener assemblies often include a pair of opposing, engageable closure elements that can be pressed together to form a seal and subsequently pried apart to release the seal. In many such fastener assemblies, commonly referred to as "zippers," the closure elements are complementary profiles that interlock when pressed together.
• Some fastener assemblies include a slider to facilitate engaging and disengaging of the closure elements.
• the slider rides on the closure elements, and, depending on the direction the slider is moved along the closure elements, the fastener assembly is either opened or closed.
• the slider will include a separating element that fits between the closure elements in order to pry them apart. Such separating elements are illustrated in U.S.
• Patent Nos. 4,262,395 (arrowhead-shaped separating element); 5,007,143 (tapered separating element); 3,173,184 (v-shaped separating element) and 5,067,208 (key-hole shaped separating element).
• Certain reclosable fastener assemblies provide tactile and/or audible feedback as the slider moves across the closure elements. These typically involve detents or deformations in the closure elements that affect the feel and/or sound the closure elements produce as they are interlocked, such as in U.S. Patent Nos. 5,138,750 and 5,722,128, or closure elements that elastically deform when interlocked, such as in U.S.
• the former type provides feedback while the slider is being moved, but no real indication as to whether the fastener assembly is closed or open once the slider is at an end of the closure elements.
• the latter type does provide an indication of when the fastener assembly is closed, but that indication is rather subtle.
• Other reclosable fastener assemblies provide visual feedback when the closure elements are engaged. These typically involve providing colored closure elements that combine to produce a color change when the closure elements are interlocked. Some examples are illustrated in U.S. Patent Nos. 4,829,641; 4,907,321 and 5,356,222. Unless the closure profiles are sufficiently separated, this arrangement is only helpful when the user remembers which color indicates an open position of the closure elements.
• the reclosable fastener assembly of the present invention addresses the foregoing needs in the art by providing complementary partial indicators that combine to form a visual indicator when the slider is in the closed position.
• the present invention relates to a reclosable fastener assembly, including first and second elongated closure elements engageable to form a seal.
• a slider is slidable relative to the closure elements between an open position and a closed position and is adapted (i) to engage the closure elements to one another when moved across the closure elements toward the closed position and (ii) to disengage the closure elements from one another when moved across the closure elements toward the open position.
• the slider carries a first partial indicator.
• a second partial indicator is located relative to the closure elements so as to complement the first partial indicator to form a visual indicator when the slider is in the closed position.
• the second partial indicator is stationary relative to the closure elements.
• the second partial indicator is located near an end of the closure elements.
• the first and second partial indicators can comprise complementary portions of a pattern.
• the pattern can be a word, in which case the first and second partial indicators can include complementary portions of individual letters of the word.
• the pattern can also depict an object, which can be three dimensional.
• a stop can be disposed so that the slider abuts the stop when the slider is in the closed position, and the second partial indicator can be provided on the stop.
• the slider can include an opening through a side of the slider, and the second partial indicator can comprise a visible feature that is located so as to be visible through the opening of the slider when the slider is in the closed position.
• a pair of the openings can be provided, one each through opposite sides of the slider, in which case a pair of the visible features can be provided, each located so as to be visible through a different one of the pair of the openings of the slider when the slider is in the closed position.
• the feature can be provided on the surface of one of the closure elements, and can be a pigmented spot, for example.
• the present invention relates to a reclosable fastener assembly for selectively closing a mouth of a thermoplastic bag.
• the fastener assembly includes first and second elongated closure profiles disposed on opposing surfaces of the mouth of the bag.
• the first and second closure profiles are interlockable to seal the mouth of the bag.
• a slider brackets the closure profiles, and is slidable relative to the closure profiles between an open position and a closed position.
• the slider is adapted (i) to interlock the closure profiles when moved across the closure profiles toward the closed position and (ii) to disengage the closure profiles from one another when moved across the closure profiles toward the open position.
• the slider carries a first partial indicator.
• a second partial indicator is disposed relative to the closure profiles so as to combine with the first partial indicator to form a visual indicator when the slider is in the closed position.
• Figure 1 A is a partial perspective view of a thermoplastic bag employing a reclosable fastener assembly according to an embodiment of the present invention.
• Figure IB is a detailed perspective view of an aspect of the fastener assembly illustrated in Figure 1, in a closed position.
• Figures 2A and 2B are schematic illustrations of partial indicators of a fastener assembly according to an embodiment of the present invention, in a partially open position and a closed position, respectively.
• Figures 3 A and 3B are schematic illustrations of partial indicators of a fastener assembly according to another embodiment of the fastener assembly of the present invention, in a partially open position and a closed position, respectively.
• Figure 4A is a partial perspective view of a thermoplastic bag employing a reclosable fastener assembly according to another embodiment of the present invention.
• Figure 4B is a detailed perspective view of an aspect of the fastener assembly illustrated in Figure 4A, in a closed position.
• FIGS 1 A and IB illustrate a reclosable fastener assembly 1 according to an embodiment of the present invention.
• the fastener assembly 1 includes first and second elongated closure elements 10, 20 that are engageable to form a seal.
• a slider 30, which can slide relative to the closure elements 10, 20 between a closed position (illustrated in Figure IB) and a fully open position (at the opposite end of the closure elements 10, 20), is adapted to promote engagement between the closure elements 10, 20 when moved across the closure elements 10, 20 toward its closed position, and disengage the closure elements 10, 20 from one another when moved across the closure elements toward its open position.
• the fastener assembly includes first and second partial indicators 42, 44, which are visible features that complement one another to form a visual indicator 40 when the slider 30 is in its closed position.
• the first partial indicator 42 is provided on the slider 30.
• the second partial indicator 44 is provided separate from the slider 30 and is positioned so as to complement the first partial indicator 42 and to form the visual indicator 40 when the slider 30 is moved to its closed position.
• the reclosable fastener assembly 1 is useful, for example, for selectively closing the mouth of a thermoplastic bag 50.
• a typical thermoplastic bag 50 is formed of an opposing pair of flexible plastic sheets 51, 53, sealed together along abottom (not shown) and two opposing side edges 52, 54. The top edges 56, 58 of the bag 50 are not sealed together, thereby forming an open mouth (to which the closure elements are affixed).
• the plastic sheets 51, 53 are typically made from any suitable thermoplastic film.
• Suitable materials include low density polyethylene, linear low density polyethylene, substantially linear copolymers of ethylene, polypropylene, polyvinylidene chloride, other thermoplastic polymers, and blends of two or more of these. Pigment(s), ethylene vinyl acetate (for enhanced clarity), or the like, are often added.
• the closure elements 10, 20 typically comprise complementary profiles, facing one another, which can be interlocked substantially across their entire length to form a seal. The closure elements 10, 20 are engaged to one another by pressing them together. The closure elements 10, 20 are affixed to or near the top edges, 56, 58, respectively, of the plastic sheets 51, 53 of the bag 50 and face one another.
• the closure elements 10, 20 can be extruded separately and attached to the bag, or can be extruded integrally with the sheets forming the bag.
• the closure elements can take any of several forms known in the art, including profiles such as those noted above, shown in U.S. Patent Nos. 5,140,720; 5,007,143 and 3,173,184.
• the closure elements 10, 20 are engaged to and disengaged from one another by action of the slider 30.
• the construction and operation of the slider 30, insofar as it interacts with the closure elements 10, 20 to open and to close the fastener assembly 1, are not critical to the present invention and can take any suitable form.
• One suitable slider is illustrated in U.S. Patent No. 5,722,128, incorporated herein by reference in its entirety.
• the slider 30 will typically have a generally inverted U-shaped profile, with a top 31 that straddles across the closure elements and sides 32, 33 that depend from the top, one to either side of the closure elements 10, 20. At least a portion of the closure elements is bracketed by the sides 32, 33 of the slider.
• ridges 35 project inwardly from each side 32, 33 of the slider 30.
• the ridges 35 help to maintain the slider 30 on the closure elements 10, 20, and can assist in pressing the closure elements 10, 20 into engagement.
• the outer surfaces of the closure elements 10, 20 can be shaped to accommodate or provide a track for the ridges 35.
• the ridges 35 can extend substantially the entire length of the slider 30, or can be provided at either end of the slider 30.
• the slider 30 will be tapered, so that either the sides 32, 33 or the ridges 35 are closer together at one end 38 (the "clamping" end) of the slider 30 than at the other end 39. As the slider 30 is moved toward its closed position, the clamping end 38 of the slider 30 trails. The closer spacing (between the sides 32, 33 or the ridges 35) acts to press the closure elements 10, 20 together, thereby forcing the closure elements 10, 20 to interlock.
• a separating element (not shown) can depend from the top 31 between the sides 32, 33 of the slider.
• the separating element fits between the closure elements 10, 20.
• the separating element trails the clamping end 38 of the slider 30, so that the separating element pries the closure elements 10, 20 apart.
• the configuration of the separating element is not critical to the present invention.
• the slider 30 can be formed in any suitable manner, including fabricating multiple parts which are secured together on the closure elements 10, 20 (by, for example, fusing, friction fitting, bondings, clamping, or the like), or a one-piece construction that is fit onto the closure elements.
• the slider 30 (or slider parts) can be formed using any suitable method, such as injection molding, and can be formed of any suitable material, such as, for example, polybutylene terephthalate, polypropylene, nylon, polystyrene, acetal, polyketone, high density polyethylene, polycarbonate, acrylonitrile butadiene styrene, or the like.
• a stop 60 can be provided at a position at which the slider 30 will abut the stop 60 when the slider 30 is in its closed position.
• This stop 60 can serve two functions.
• the stop 60 can prevent the slider 30 from sliding off the end of the closure elements 10, 20 once the slider 30 reaches its closed position.
• the stop 60 can also reinforce the edge 54 of the bag 50 and/or the ends of the closure elements 10, 20, thereby maintaining the sheets 51, 53 together at the edge 54 of the bag and/or the closure elements 10, 20 together at their ends.
• a similar stop (not shown) can be provided at the opposite end of the closure elements 10, 20 for the same reasons.
• the end stops 60 also provide a user with a convenient grip when moving the slider 30.
• the stops 60 are not critical to the present invention, and can be done in any suitable manner.
• the stops 60 can be riveted, clamped, molded or fused either to the sheets 51, 53 or to the closure elements 10, 20, or can be formed integrally with the closure elements 10, 20, generally in a post- extrusion process.
• suitable stops are illustrated in U.S. Patent Nos. 5,067,208 (riveted-on clips); 5,088,971 (molded from surrounding fastener material); 5,131,121 (ultrasonically formed); 5,161,286 (clamped-on clips); 5,405,478 (bonded end stops);
• the slider 30 includes the first partial indicator 42.
• the first partial indicator 42 can be formed integrally with the slider 30, or can be affixed to the slider 30, as long as the first partial indicator 42 moves with the slider 30.
• the second partial indicator 44 is disposed relative to the closure elements
• the first and second partial indicators 42, 44 provide complementary portions of a pattern.
• the actual content of the pattern is not crucial to the present invention, although it is preferred that the pattern be chosen and divided so as to provide a clear indication of when the visual indicator 40 is and is not formed.
• the pattern can be a word. In the embodiment illustrated in Figures 2A and 2B, the pattern is the word "CLOSED" divided between the first and second partial indicators 42, 44.
• first and second partial indicators 42, 44 include complementary portions of an individual letter or individual letters of the word (as in the embodiment shown in Figures 2 A and 2B), thereby further emphasizing the disconnect of the partial first and second partial indicators 42, 44 when the slider 30 is not in its closed position.
• first and second partial indicators 42, 44 include complementary portions of an individual letter or individual letters of the word (as in the embodiment shown in Figures 2 A and 2B), thereby further emphasizing the disconnect of the partial first and second partial indicators 42, 44 when the slider 30 is not in its closed position.
• the pattern depicts an image or object.
• the image or object can be two- or three-dimensional, and if desired, a well-known animated character, symbol, or the like.
• the second partial indicator 44 be provided on the stop 60 that is near the closed position of the slider 30.
• the second partial indicator 44 can be provided integrally with the closure elements 10, 20 or another part of the fastener assembly 1, or can be a separate element affixed to the fastener assembly.
• the slider 30 includes an opening 37 through which a surface of the closure elements 10, 20 can be viewed. The opening 37 can be located so that the closure elements 10, 20 are visible therethrough.
• the slider 30 can extend above or below the closure elements 10, 20, and the opening 37 can be positioned so that a different part of the fastener assembly 1 or bag 50 is visible therethrough.
• the opening 47 can be formed in any suitable manner. For example, if the slider is injection molded, the opening 47 can be formed during molding, in a post-mold operation (e.g., drilling), or by some combination of the two.
• the slider 30 and opening 37 provide the first partial indicator 42.
• the second partial indicator 44 is a feature of the fastener assembly or bag that is located so as to be visible through the opening 37 of the slider 30 when the slider 30 is in its closed position.
• the second partial indicator 44 is positioned on the closure elements 10, 20, a different part of the fastener assembly 1, or the bag 50, depending on the location of the opening 37 of the slider 30 when the slider 30 is in its closed position.
• the second partial indicator 44 can be a colored spot, pattern, icon, symbol, letter, word or the like that is provided on or is visible through an outer surface of one of the closure elements 10, 20.
• the second partial indicator 44 can be formed in any suitable manner, such as, for example, ink jet printing, contact printing, embossing, or the like.
• openings 37 can be provided on each side 32, 33 of the slider 30, and corresponding second partial indicators 44 can be provided on each side of the bag.
• multiple openings 37 can be provided on either or both sides 32, 33 of the slider 30, and corresponding second partial indicators 44 can be provided.
• the slider 30 can include, as part of the first partial indicator 42, a portion of a pattern interspersed with and interrupted by the openings 37.
• the second partial indicator 44 can be a complementary portion of the pattern located so as to be visible through the openings 37 when the slider 30 is in its closed position. This arrangement has similarities to the embodiments discussed with reference to Figures 1 A-
• first and second partial indicators 42, 44 comprise complementary portions of a pattern, and similarities to the embodiment discussed with reference to Figures 4A and 4B, in that visual indicator 40 is formed by aligning openings in the slider 30 with a visible feature of the fastener assembly 1.
• the third partial indicator 44 is the word “OPEN” located so as to be visible when the slider 30 is not in its closed position and so as to be obscured when the slider 30 is in its closed position.
• the letters "O” and “E” of the word “OPEN” can be located so as to be visible through the openings
• the first partial indicator 42 is provided by a slider 30 that is see-through and color tinted.
• the second partial indicator 44 can be an underlying pattern in one color that is overlayed (and obscured) by a second color.
• the second partial indicator 40 is visible through the slider 30 when the slider 30 is in its closed position.
• the colors of the slider 30 and the second partial indicator 44 are chosen so that the second color is filtered by the slider 30 so that the underlying pattern becomes visible through the slider 30 to form the visible indicator 40.
• the second color is provided in an overlying pattern. The user will know that the overlying pattern indicates that the fastener assembly is open, while the underlying pattern indicates closed (such as, for example, the word "CLOSED").
• Fastener assemblies according to the present invention are particularly useful as resealable closures for thermoplastic bags.
• Such a fastener assembly provides ease of use by virtue of its employment of a slider to assist in opening and closing the fastener assembly. It also provides the user with a simple visual indication as to whether the slider is in its closed position.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bag Frames (AREA)
• Slide Fasteners (AREA)
• Push-Button Switches (AREA)
• Control Of Indicators Other Than Cathode Ray Tubes (AREA)
• Projection Apparatus (AREA)
• Closures For Containers (AREA)
• Cartons (AREA)
• Cable Accessories (AREA)
• Road Signs Or Road Markings (AREA)

Priority Applications (12)

Applications Claiming Priority (1)

Publications (1)

Family

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Family Applications (1)

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Cited By (4)

Citations (5)

Family Cites Families (3)

• 2001
  • 2001-06-15 KR KR10-2003-7016439A patent/KR20040029999A/ko active IP Right Grant
  • 2001-06-15 AT AT01944566T patent/ATE277534T1/de not_active IP Right Cessation
  • 2001-06-15 PT PT01944566T patent/PT1395138E/pt unknown
  • 2001-06-15 NZ NZ530139A patent/NZ530139A/en unknown
  • 2001-06-15 CA CA002455343A patent/CA2455343C/en not_active Expired - Fee Related
  • 2001-06-15 MX MXPA03011634A patent/MXPA03011634A/es active IP Right Grant
  • 2001-06-15 DE DE60106096T patent/DE60106096T2/de not_active Expired - Fee Related
  • 2001-06-15 EP EP01944566A patent/EP1395138B1/en not_active Expired - Lifetime
  • 2001-06-15 JP JP2003504777A patent/JP2004529731A/ja active Pending
  • 2001-06-15 WO PCT/US2001/019316 patent/WO2002102181A1/en active IP Right Grant
  • 2001-06-15 ES ES01944566T patent/ES2228891T3/es not_active Expired - Lifetime
  • 2001-06-15 BR BR0117051-1A patent/BR0117051A/pt not_active IP Right Cessation

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