Bag roll cassette and method of use

Abstract

A bag having a tubular body having an upper open end and a lower closed end is disclosed. The tubular body has a larger opening diameter at the upper open end. The tubular body narrows to a narrower opening diameter adjacent to the lower closed end. The flat, double-layered tubular body has a pair of lateral edges extending from the upper edge to the lower edge. The upper edge defines the boundary of the upper open end. The lower edge defines the boundary of the lower closed end. The pair of lateral edges are generally parallel to each other at a first portion adjacent to the upper edge.

Description

Technology Field

[0001] Cross-reference of related applications

[0002] This application claims priority to U.S. Patent Application No. 62 / 577,469 filed October 26, 2017, which is incorporated herein by reference, and U.S. Patent Application No. 62 / 734,014 filed September 20, 2018, which is incorporated herein by reference.

[0003] The present application relates to a bag roll used in waste disposal units such as trash cans, pails, compost, etc. Background Technology

[0004] Disposal units, such as bins, pails, compost bins, and recycling bins, are typically configured to support bags. For convenience and cost-effective packaging, bags are generally part of bag rolls, and the bags are connected to each other. In certain configurations, bag rolls are stored at the bottom of a pail or wire rack, and the free end of the bag roll is raised and supported openly at the top of the pail or wire rack. Thus, when a bag is filled with waste or other materials, the filled bag can be removed to make way for the next bag on the roll to receive the waste. However, as the volume of the bag increases as it fills with waste, removing the bag from the pail or wire rack can be difficult, particularly if the filled bag must be pulled upward from the pail. The problem to be solved

[0005] The purpose of the present disclosure is to provide a new back roll. means of solving the problem

[0006] According to a first embodiment of the present disclosure, a bag is provided comprising a tubular body having an upper open end and a lower closed end, wherein the tubular body has a larger opening diameter at the upper open end and the tubular body narrows to a narrower opening diameter adjacent to the lower closed end, and the flat double-layered tubular body has a pair of lateral edges extending from the upper edge to the lower edge, the upper edge defining the boundary of the upper open end and the lower edge defining the boundary of the lower closed end, and the pair of lateral edges are generally parallel to each other in a first portion adjacent to the upper edge.

[0007] In addition, according to the first embodiment, for example, a pair of side edges are generally parallel to each other in a second part adjacent to the bottom edge.

[0008] In addition, according to the first embodiment, for example, a pair of side portions form a taper from the first portion to the second portion.

[0009] In addition, according to the first embodiment, for example, at least one weld seam causes taper and narrowing in the second part.

[0010] In addition, according to the first embodiment, for example, at least one of the pair of weld seams causes tapering and narrowing in the second part.

[0011] In addition, according to the first embodiment, for example, a cut-out is adjacent to the welding point.

[0012] In addition, according to the first embodiment, for example, at least one weld seam causes a taper and a narrowing in the second part.

[0013] In addition, according to the first embodiment, for example, at least one of the pair of weld seams causes tapering and narrowing in the second part.

[0014] In addition, according to the first embodiment, for example, a flap is adjacent to at least one weld seam, and this flap is excluded from the opening diameter.

[0015] In addition, according to the first embodiment, for example, the tubular body is manufactured from two or more layers of film.

[0016] In addition, according to the first embodiment, for example, at least one of the layers is ethylene vinyl alcohol.

[0017] In addition, according to the first embodiment, for example, at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base.

[0018] In addition, according to the first embodiment, for example, the upper edge of the flat double layer has a sinusoidal shape.

[0019] In addition, according to the first embodiment, for example, it has the shape of a flat, two-layered lower soft sinusoidal waveform.

[0020] Additionally, according to the first embodiment, for example, the bag is configured to be suspended from a tubular bag support of a disposal unit, the tubular bag support has an inner circumference C and a wall thickness T, and the opening diameter D is (C S / π + 2T) < D < 1.05 (C S It follows / π + 2T).

[0021] In addition, according to the first embodiment, for example, the relationship between a flat two-ply width WA with a larger opening diameter and a flat two-ply width WC with a narrower opening diameter is expressed as 0.60WA ≤ WC ≤ 0.95WA.

[0022] In addition, according to the first embodiment, for example, the bag is configured to be suspended from a tubular bag support of a disposal unit, and the tubular bag support has an outer circumference C O It has, and white is C O / 2 ≤ WA ≤ 1.05(C O It has a flat 2-ply width WA with a larger opening diameter according to / 2).

[0023] Additionally, according to the first embodiment, for example, the bag is configured to be suspended from a tubular bag support of a disposal unit, the tubular bag support has an inner circumference C and a wall thickness T, and the bag is π / 2 (C S / π + 2T) ≤ WA ≤ 1.05 π / 2 (C S It has a flat 2-ply width WA with a larger opening diameter according to / π + 2T).

[0024] According to a second embodiment of the present disclosure, a bag roll comprising a plurality of bags according to a first embodiment is provided, wherein the bags are connected from the bottom edge of a first bag of the bag roll to the upper edge of a second bag of the bag roll.

[0025] In addition, according to the second embodiment, for example, the back roll is within the receptacle of the cassette body, and the free end of the back roll is discharged from the cassette body through the upper opening of the receptacle.

[0026] According to a third embodiment of the present disclosure, a bag roll is provided to be suspended from a tubular bag support of a waste unit, the tubular bag support having an inner circumference C and a wall thickness T, the bag roll is connected at the ends and at the bottom and top, and each of the bags is (C S / π + 2T) < D < 1.05 (C S It has an opening diameter D according to / π + 2T).

[0027] In addition, according to the third embodiment, for example, the bag is manufactured as a continuous tubular body separated by a weld seam and a tear line of the bottom edge of each bag.

[0028] In addition, according to the third embodiment, for example, the tubular body is manufactured from two or more layers of film.

[0029] In addition, according to the third embodiment, for example, at least one of the layers is ethylene vinyl alcohol.

[0030] In addition, according to the third embodiment, for example, at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base.

[0031] In addition, according to the third embodiment, for example, the upper edge of each bag in a flat two-layer state has a sinusoidal shape.

[0032] In addition, according to the third embodiment, for example, it has the shape of a flat, two-layered lower soft sinusoidal waveform.

[0033] According to a fourth embodiment of the present disclosure, a bag roll is provided comprising a plurality of bags connected to each other, and to the bottom and to the top, wherein the plurality of bags have a larger section adjacent to the open end of the top and a narrower section adjacent to the closed end of the bottom, and the relationship between the flat two-ply width WA of the larger section and the flat two-ply width WC of the narrower section is expressed as 0.60WA ≤ WC ≤ 0.95WA.

[0034] In addition, according to the fourth embodiment, for example, the bag is manufactured as a continuous tubular body separated by the welding seam of each bag and the tearing line of the bottom edge.

[0035] In addition, according to the fourth embodiment, for example, the tubular body is manufactured from two or more layers of film.

[0036] In addition, according to the fourth embodiment, for example, at least one of the layers is ethylene vinyl alcohol.

[0037] In addition, according to the fourth embodiment, for example, at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base.

[0038] In addition, according to the fourth embodiment, for example, the upper edge of each bag in a flat double-layer state has a sinusoidal shape.

[0039] In addition, according to the fourth embodiment, for example, it has the shape of a flat, two-layered lower soft sinusoidal waveform.

[0040] According to a fifth embodiment of the present disclosure, a bag roll is provided to be suspended from a tubular bag support of a disposal unit, wherein the tubular bag support has an outer circumference C O It has, and the bag roll includes a plurality of bags with ends connected and bottoms connected to tops, and each bag is C O / 2 ≤ WA ≤ 1.05(C O The open end of the upper part of the bag according to / 2) has at least an adjacent flat 2-layer width WA.

[0041] In addition, according to the fifth embodiment, for example, the bag is manufactured as a continuous tubular body separated by the welding seam of each bag and the tearing line of the bottom edge.

[0042] In addition, according to the fifth embodiment, for example, the tubular body is manufactured from two or more layers of film.

[0043] In addition, according to the fifth embodiment, for example, at least one of the layers is ethylene vinyl alcohol.

[0044] In addition, according to the fifth embodiment, for example, at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base.

[0045] In addition, according to the fifth embodiment, for example, the upper edge of each bag in a flat double-layer state has a sinusoidal shape.

[0046] In addition, according to the fifth embodiment, for example, it has the shape of a flat, two-layered lower soft sinusoidal waveform.

[0047] According to a sixth embodiment of the present disclosure, a bag roll is provided to be suspended from a tubular bag support of a waste unit, the tubular bag support having an inner circumference C and a wall thickness T, and the bag roll comprises a plurality of bags connected at the ends and at the bottom and top, each of which is π / 2(C S / π + 2T) ≤ WA ≤ 1.05 π / 2(C S It has at least an upper open section with a flat 2-fold width WA according to / π + 2T).

[0048] In addition, according to the 6th embodiment, for example, the bag is manufactured as a continuous tubular body separated by the welding seam of each bag and the tearing line of the bottom edge.

[0049] In addition, according to the 6th embodiment, for example, the tubular body is manufactured from two or more layers of film.

[0050] In addition, according to the 6th embodiment, for example, at least one of the layers is ethylene vinyl alcohol.

[0051] In addition, according to the 6th embodiment, for example, at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base.

[0052] In addition, according to the 6th embodiment, for example, the upper edge of each bag in a flat double-layer state has a sinusoidal shape.

[0053] In addition, according to the 6th embodiment, for example, it has the shape of a flat, two-layered lower soft sinusoidal waveform. Brief explanation of the drawing

[0054] FIG. 1 attached to this specification is a perspective view of a back roll according to one embodiment of the present disclosure; FIG. 2 attached to this specification is a perspective view of the bag roll of FIG. 1 in a state where the bag is separated from the bag roll; U.S. Patent Application No. 62 / 577,469 (https: / / patentscope.wipo.int / search / docs2 / pct / WO2019092539 / pdf / ej_SKlNX4FO-bVo4RcF746MOJvmBNCeyYTm899XKmUatnzbnWC-puzwVPAP_q4Fzk65DvvLtwyXSfb0H5Owh-F47Ei79DROcdw7_LcSdfPo2DYqmFXXptykDcCpCLhzI?docId=id00000048449750) and No. 62 / 734,014 (https: / / patentscope.wipo.int / search / docs2 / pct / WO2019092539 / pdf / FIG. 3 attached to (hRjRUmxCSWh1qRq8EE40YU-K9O-N6dhr679rZTir3xtiOt9tnQIWEgs7xNaq2iUSQfiJXTHoERboyswOKPnas6_ubx9GlVb3nQP_aXqYiFD0MtBfX8laF01KeMNtqjzl?docId=id00000048449751) is a perspective view of a back roll cassette according to the present disclosure comprising, for example, the back roll of FIG. 1; FIG. 4 of the above U.S. Patent Applications No. 62 / 577,469 and No. 62 / 734,014 is a perspective view of the bag roll cassette of FIG. 3 in a fragmented waste disposal unit; FIG. 5 of the above U.S. Patent Applications No. 62 / 577,469 and No. 62 / 734,014 is a cross-sectional view of the bag roll cassette and waste disposal unit of FIG. 4; FIGS. 6(A) through 6(C) of the above-mentioned U.S. Patent Applications No. 62 / 577,469 and No. 62 / 734,014 are plan views of the upper edge contour of the back of the back roll of FIG. 1; FIG. 7 of the above-mentioned U.S. Patent Applications No. 62 / 577,469 and No. 62 / 734,014 is a front view of a bag of a bag roll according to another embodiment of the present disclosure; FIG. 8 attached to this specification is a perspective view of a back roll according to another embodiment of the present disclosure; FIG. 9 attached to this specification is a perspective view of a bag roll according to another embodiment of the present disclosure. Hereinafter, FIGS. 1, 2, 8 and 9 refer to the drawings attached to this specification, and FIGS. 3 through 7 refer to the drawings attached to U.S. Patent Applications No. 62 / 577,469 and No. 62 / 734,014. Specific details for implementing the invention

[0055] Referring to the drawings, particularly FIGS. 1 to 3, the bag roll cassette is denoted as 10 as a whole (Fig. 3). The bag roll cassette (10) may have a bag roll (20), which is wound onto a tube (30) and inserted into a cassette body (40) (Fig. 3). The bag roll (20) according to the present disclosure may or may not have a tube (30) and / or a cassette body (40).

[0056] The bag roll (20) is illustrated in more detail in FIGS. 1 and FIGS. 2. The bag roll (20) may be made of a film of plastic material. For example, depending on the application being considered, the plastic material may be a plastic such as polyethylene (LDPE, LLDPE, or HDPE), bioplastic, or polylactic acid, among many possible materials. It is also considered to add a functional layer to the plastic film, such as ethylene vinyl alcohol to form an odor barrier on the film or a nylon layer to reinforce the bag. The film may also be a biodegradable and / or compostable material, such as a starch-based material or a plant-based material.

[0057] The bag roll (20) may be in the form of a tubular film of any length having a weld line and tear-off perforation defining the boundaries of a plurality of bags whose ends are interconnected, as illustrated in 20', 20", etc. The tubular film may be accumulated on the roll in a zigzag pattern, etc. Consequently, the bag roll (20) may appear to be a continuous sheet as in FIGS. 1 and 2 because the film thickness is thin, but the bag roll (20) is a pair of panels (21) with side edges (22) joined together and overlapping each other. In one embodiment, this is referred to as a flat double-layer bag, which has two folds, one on each side edge (22), and has no gusset. The bag within the bag roll (20) may have a gusset according to the present disclosure, but the transverse dimensions of the bag may be described herein as a flat double-layer. This is a bag Even if the roll (20) has gussets, it can be interpreted to mean that the dimensions are for the transverse dimensions of the bag as if it were in a flat double-layer state. Although the bag described herein may not be packaged or sold in a flat double-layer state (it may have many more folds, such as being folded itself), the flat double-layer state is a state in which the bag is placed flat on the surface so as to have two lateral folds (two lateral edges) between the upper edge and the lower edge. Additionally, the bag is described as not stretched. This can be interpreted to mean that the bag is in its initial state on the bag roll (20) before the user handles the bag or before the bag is placed on a disposal unit that may involve some elastic or plastic deformation. The bag in its initial state on the bag roll (20) may be plastically prestretched during manufacturing, but despite such prestretching, its state on the bag roll (20) is to be considered unstretched.

[0058] The side edge (22) of each bag extends from the upper edge (23) of each bag (e.g., bag (20')) to the lower edge (24). In the connection of the ends of the bag roll (20), in contrast to the bag rolls where the lower edge or upper edge of adjacent bags is interconnected, this bag is interconnected so that the lower edge (24) of the leading bag is connected to the upper edge (23) of the trailing end within the bag roll (20). The side edge (22) is illustrated as having a contour that may include a straight segment (22A), a tapered segment (22B), and another straight segment (22C) adjacent to the upper edge (23). The straight segment (22C) extends from the tapered segment (22B) to the lower edge (24) of the bag (3). Although the term "straight" is used for the segment (22C), this side edge may taper from the maximum dimension of the WC. The expression “straight segment (22C)” is used herein for non-limiting purposes of distinction. Accordingly, the bag may have three distinct sections from the top to the bottom of the bag (e.g., bag (20')): a larger hooking section (20A), a tapered section (20B), and a narrower discarded section (20C). In one embodiment, the bag does not include a tapered section (20B) and transitions directly from the larger hooking section (20A) to the narrower discarded section (20C). The straight segments (22A) are depicted as being parallel to each other but may taper toward the bottom edge (24). Likewise, the straight segments (22C) are depicted as being parallel to each other but may taper toward the bottom edge (24). In another embodiment, the side edge (22) may taper continuously from the upper edge (23) to the lower edge (24) at a continuous angle without having a section (20B) or at two different angles, an angle for section (20A) and an angle for another section (20C).In another embodiment, the bag (20') (whether or not it is part of the roll (20)) has straight segments (22A) that are parallel or semi-parallel to each other and then form paper over a larger hooking section (20A). In yet another embodiment, the bag of the bag roll (20) may be a straight line having a constant width from the upper edge (23) to the lower edge (24), as in FIG. 7. For clarity, the width described herein is a flat width having a flat, two-layered roll bag that is coplanar with the panel (21), as in FIG. 1. The larger hooking section (20A) has a width (WA) greater than the width (WC) of the narrower discard section (20C). That is, WA > WC. When the segments (22A, 22C) are parallel as in FIGS. 1 and 2, the widths WA and WC may be constant over most or all of each section (20A, 20C). When the segments (22A, 22C) taper toward the bottom edge (24), the larger hooking section (20A) has a minimum width (WA) greater than the maximum width (WC) of the narrower discarding section (20C). For example, the width ratio is as follows: 0.60WA ≤ WC ≤ 0.95WA. In another embodiment, the width ratio is as follows: 0.65WA ≤ WC ≤ 0.85WA. In one embodiment, the segments (22A) are parallel to each other, and the segment (22C) tapers toward the bottom edge (24).

[0059] Bags such as bag (20A) have a length (L) that can be divided into LA, LB, and LC, each representing the height of sections (20A, 20B, 20C). According to one embodiment, LC is at least twice the length of LA, i.e., LC > 2LA. According to another embodiment including a tapered section (20B), LC is at least twice the combined length of LA and LB, i.e., LC > 2(LA+LB). LA can be divided into LA1 and LA2 if a concave or convex portion is formed in the upper edge (23), which will be described in detail below. LA2 is part of the section (20A) below such a concave or convex portion.

[0060] Referring to (A) through (C) of FIGS. 1 and FIGS. 6, the upper edge (23) may have different contours. In FIGS. 1, the contour of the upper edge (23) is a concave sinusoidal segment. Different contours are shown in (A) through (C) of FIGS. 6, where (A) is a straight segment, (B) is a convex sinusoidal segment, and (C) is a concave triangular segment. As in FIGS. 1, the back of the roll (20) is a pair of overlapping panels (21), so when the panels (21) are separated from each other to open the back at the upper edge (23), the non-linear contours of (B) and (C) of FIGS. 1 and FIGS. 6, respectively, form a pair of flaps, which can be used to form a knot to close and attach the back. As described above, in the back roll (20), the ends are interconnected, and the bottom and top of adjacent backs are connected, so the bottom edge (24) has a shape complementary to the top edge (23). In other words, if the contour of the top edge (23) is a concave sinusoidal shape, the bottom edge (24) is a convex sinusoidal shape, etc.

[0061] To give the aforementioned shape to the side portions (22), the panels (21) can be connected laterally by extending a continuous seam (25) from one of the side portions (22) to the other. This continuous seam (25) includes a portion in which a closed end of the bottom, such as a bag (20', 20"), is formed. Alternatively, the bag may have separate weld seams (25), namely a weld seam for the side edge (22) and a weld seam for the closed end of the bottom. For simplicity, the expression "weld seam (25)" is used in the plural, but, for example, a single continuous seam (25) in the shape of a U may exist. A weld seam (25) can be interpreted as a weld seam segment of a continuous weld seam (25). The seam (25) may be created by any suitable welding or bonding method, such as thermal welding, and other types of bonding, such as adhesive bonding, may be considered, but are described here as a weld seam. The weld seam (25) may connect the panels (21) to form a bottom edge (24), that is, a closed bottom end of the bag of the bag roll (20). The weld seam (25) may also be upper Although it may extend to the rim (23), in FIG. 1 the weld seam (25) ends at a larger hooking section (20A). In the embodiment of FIG. 1, the straight segment (22A) of the larger hooking section (20A) has two folds of the tubular film as described above for the flat double-layer state, and these folds form a boundary between the panels (21). Thus, according to one embodiment, the weld seam (25) is periodically formed in a straight continuous tube (continuous tubular body) in a flat double-layer state, and a portion of the film on the transverse outer side of the weld seam (25) can be cut off to form the shape of FIG. 1. In one embodiment, although the weld seam (25) forms a narrower discard section (20C), there is no such cutout because the tubular film may be present.

[0062] A tear perforation line (26) is perforated at the joint between the bottom edge (24) of the first bag (e.g., leading bag (20')) and the top edge (23) of the subsequent bag (e.g., trailing bag (20")) within the bag roll (20). The tear perforation line (26) may be formed by a series of spaced perforations along a contour that mimics the contours of the bottom edge (24) and the top edge (23). The tear perforation line (26) is adjacent to the weld seam (25) and forms a weakened portion of the bag roll (20), thereby separating one of the bags, such as the bag (20') of FIGS. 1 and FIGS. 2, as a result of the tear operation. In one embodiment, the cutting separation of the tear perforation line (26) and the side of the weld seam (25) is performed by die cutting.

[0063] Referring to FIG. 3, the back roll (20) can be inserted into a cassette body (40), which is a receptacle from the back roll (20), for example. The cassette body (40) may have an opening, such as a slit (41) or an upper opening, through which the free end of the back roll (20) extends. The cassette body (40) is depicted as having a rectangular shape, but other shapes such as a rectangular prism, a cylinder, etc. are also considered.

[0064] Referring to FIGS. 4 and 5, a bag roll (20) (Fig. 4) as part of a cassette (10) or a bag roll (20) alone, that is, a bag roll (20) (Fig. 5) without a cassette body (40), is received within a disposal unit (50). In this specification, the term “disposal unit” is used to include garbage, diaper bins, compost, recycling containers, trash cans, etc. The disposal unit (50) may have a base (51), and an upright wall (52) protrudes from the base. The upright wall (52) is in the form of a cylindrical tube in FIG. 4, but may have other shapes, such as a square cross section or an elliptical cross section. Although not illustrated, a hinged door may be part of the upright wall (52) to access the interior of the disposal unit (50). As another possibility, the upright wall (52) may be raised away from engagement with the base (51). Various connection configurations, such as quick connection mechanisms and fasteners, may exist. A cover (53) is mounted on an upright wall (52). The cover (53) may have a central opening formed with a rim (53A) protruding downward, which may be close to or in contact with the bag, thereby ensuring that the bag remains suspended from the disposal unit (50) as shown in FIG. 5. Additionally, the central opening of the cover (53) shown in FIG. 4 may be closed by a trap door (54) (also called a lid) hinged to the rest of the cover (53). The trap door (54) opens or closes upper access to the internal cavity (55) of the disposal unit (50). This may be deflected by a spring or actuated by a pedal mechanism, etc. Additionally, although not shown, any suitable type of closing mechanism (translation, rotation) may be provided at other locations on the internal cavity (55) or disposal unit (50) to compress and close the bag.

[0065] The disposal unit (50) has a tubular bag support (56) adjacent to the cover (53). In one embodiment, the annular bag support (56) may have any suitable shape and is illustrated as a cylindrical shape having a circular cross-section. Other possible cross-sectional shapes include, non-exclusively, square, rectangular, elliptical, squircle, pentagon, hexagon, octagon, etc. Thus, the expression "tubular" in the tubular bag support (56) includes many of these shapes. The tubular bag support (56) has a height H S , inner perimeter C S , outer perimeter C O and has a wall thickness T. In the embodiment of FIG. 4 where the tubular bag support (56) is circular, the inner diameter is D S and, inner perimeter C S is πD S It is. External perimeter C O is π(D S It can be expressed as +2T). In another embodiment, the disposal unit (50) has two or more hooks that serve as bag supports (56). FIG. 5 can be interpreted as having two long straight or curved hooks (56) shown in cross-section.

[0066] The funnel (57) is located below the tubular bag support (56) in the upright orientation of the waste container (50). The funnel (57) has a central opening that may have the same shape as the tubular bag support (56). Thus, in FIG. 4, the funnel (57) has a circumference C F and inner diameter D F It has a truncated cone shape with a central circular opening having a central circular opening. The height of the funnel (57) is H F It is illustrated as such. In one embodiment, the funnel (57) is located directly below the tubular bag support (56), and the height H from the upper edge of the tubular bag support (56) to the edge of the central opening of the funnel (57) T is as follows: H T = HF + H S In one embodiment, the funnel (57) is spaced apart from the tubular bag support (56), and H T It may include a spacing value along the vertical axis of the container (50). The funnel (57) concentrates waste materials into the unfolded bag, thereby keeping the bag generally compact when filled. Thus, the funnel (57) allows the user to easily remove the filled bag from the top of the waste unit (50) by pulling it upward.

[0067] As observed from FIGS. 4 and 5, a bag roll cassette (10) or a bag roll (20) is placed at the bottom of the disposal unit (50). In one embodiment, a connection configuration is provided to hold the bag roll cassette (10) or the bag roll (20) by a base (51), but the bag roll cassette (10) or the bag roll (20) may simply be placed on the base (51) and held by gravity at the bottom of the disposal unit (50). The free end of the bag roll (20) extends upward so that the larger hooking section (20A) of the bag (20') is partially folded over the tubular bag support (56). By doing so, the upper open end of the bag (20') remains open so that an object can be disposed of within the bag (20'). The remainder of the bag (20'), including the narrower disposal section (20C), extends into the internal cavity (55) of the container (50). While the bag (20') is attached to the tubular bag support (56), it remains connected to the bag roll (20) as shown in FIG. 4.

[0068] In order to keep the bag (20') suspended from the tubular bag support (56), the bag (20') may have a predetermined unextended transverse flat two-layer width at its upper end, described as follows: C O / 2 ≤ WA ≤ 1.05(C O / 2).

[0069] When the tubular bag support (56) is circular, the bag (20') takes on a circular shape when suspended from the tubular bag support (56) as in FIG. 4. In FIG. 4, the diameter D of the opening of the bag (20') is (C S / π + 2T) ≤ D ≤ 1.05(C S It can be expressed as / π + 2T). If the bag is not circular when unfolded and opened, the bag may follow the following relationship for an unstretched, transversely flat, 2-ply width WA: π / 2(C S / π + 2T) ≤ WA ≤ 1.05 π / 2(C S / π + 2T). The latter relationship may be for a hundred, for example, as in Fig. 7.

[0070] In one embodiment, as shown in FIG. 5, the narrower disposal section (20C) of the bag (20') is preferably located flush with or below the bottom edge of the funnel (57). In practice, the narrower disposal section (20C) is configured to facilitate pulling the filled bag upward to remove it despite the presence of the funnel (57) and a closing mechanism (not shown). Thus, the bag of the roll (20) (LA+LB) > H T + H S It may follow. In the case of a bag having the contours of (B) and (C) of FIG. 1 and FIG. 6, the bag of the roll (20) is such that a subsection of length LA2 of the section (20A) of the bag covers more than half of the outer circumference of the tubular bag support (56) when tensioned, and the bag is 1.5H S ≤ LA2 ≤ 2H S It may also follow. If the bag has the contour of (A) of FIG. 6, the bag of the roll (20) is such that when the section (20A) of the bag is tensioned, it covers more than half of the outer circumference of the tubular bag support (56) 1.5H S ≤ LA ≤ 2H S It may also follow.

[0071] Due to the funnel (57), the bag of the roll (20) may have a predetermined unstretched transverse flat two-ply width WC expressed as follows: WC ≤ C F / 2. Accordingly, even when filled with objects, the bag of the roll (20) can be pulled out from the top, that is, through the funnel (57) and the tubular bag support (56) to the outside of the container (50). By doing so, when the filled bag is discharged from the top of the container (50), the subsequent bag in the bag roll (20) is pulled upward, and its upper end is generally aligned with the tubular bag support (56). The filled bag is once separated from the roll of the bag (20) to the outside of the container (50), and the subsequent bag in the roll (20) is suspended from the tubular bag support (56) in the manner shown in FIG. 5.

[0072] It is noted that the bag roll cassette (10) and / or bag roll (20) may be used in any other disposal unit that may or may not have the same parts as the disposal unit (50) of FIGS. 4 and 5. The disposal unit (50) is provided as an exemplary barrel configuration configured to be used with the bag roll cassette (10) and / or bag roll (20), and it is evident that variations of the disposal unit (50) may also be used with this bag roll cassette (10) and / or bag roll (20).

[0073] Referring to FIG. 8, another embodiment of the back roll (20) is illustrated. This back roll (20) is similar to the back roll (20) of FIG. 1, but without the cutout on the side of the welding seam (25). Thus, when laid flat as in FIG. 8, the back roll (20) has a constant width. For example, the side edges (22) are parallel to each other along the entire length of the back from the back roll (20). However, due to the presence of the welding seam (25), the inner dimension WC (e.g., inner diameter) of the back is the same as in the embodiment of FIG. 1. In fact, since the open back has a narrow inner portion due to the presence of the welding seam (25), the opening diameter of the back in FIG. 8 is similar to the opening diameter of the back in FIG. 1. A flap is formed on the outside of the welding seam (25). For example, the width ratio is as follows: 0.60WA ≤ WC ≤ 0.95WA. The description provided above for the back roll (20) of FIG. 1 extends to the back roll (20) of FIG. 8, excluding the cutout at the weld seam. In all embodiments described herein, unlike the two sides shown in the drawings, only a single weld seam (25) may exist (i.e., only one extends along the side edge (22)), but the narrowing described herein is still achieved. The back (20') of FIG. 8 (or all drawings) may be provided as a separate unit, that is, as not part of the back roll (20).

[0074] Referring to FIG. 9, another embodiment of the back roll (20) is illustrated. This back roll (20) is similar to the back roll (20) of FIG. 8, but the welding seam (25) does not form a tapered section (20B). As shown in FIG. 9, when laid flat, that is, in a flat double-layered state, the bag (20', 20", etc.) of the bag roll (20) has a constant width. For example, the side edges (22) are parallel to each other along the entire length of the bag from the bag roll (20). However, due to the presence of the welding seam (25), the inner dimension WC (e.g., inner diameter) of the bag is the same as in the embodiment of FIG. 1. Since there is a step formed by the welding seam (25) at the transition between section (20A) and section (20B), the opening diameter is reduced. In fact, since the open bag has a narrow inner part due to the presence of the welding seam (25), the opening diameter of the bag in FIG. 8 is similar to the opening diameter of the bag in FIG. 1. For example, the width ratio is as follows: 0.60WA ≤ WC ≤ 0.95WA. The description provided above for the bag roll (20) of FIG. 1 is welding Except for the cutout at the seam, it extends to the back of the back roll (20) of FIG. 9. The back (20') of FIG. 8 (or any drawing) may be provided as a separate unit, that is, as not part of the back roll (20).

Claims

Claim 1 A bag roll comprises a plurality of bags, each having ends connected from the bottom edge of a first bag included in the bag roll to the top edge of a next bag, wherein each of the plurality of bags comprises a tubular body having an upper open end and a bottom closed end, wherein the tubular body comprises a hooking section having a larger opening diameter at the upper open end and a waste section having a narrower opening diameter adjacent to the bottom closed end, wherein the tubular body in a flat double-layered state has a pair of side edges extending from the top edge to the bottom edge, and each side edge has a folded section, wherein the upper edge defines the boundary of the upper open end and the bottom edge defines the boundary of the bottom closed end, and the pair of side edges are parallel to each other from the upper edge to the bottom edge, and at least one welding seam is such that the flatly folded width WA of the larger opening diameter is greater than the flatly folded width WC of the narrower opening diameter. A back roll that induces a shape in which the interior of the section narrows, wherein a flap exists adjacent to the at least one weld seam, and the flap is formed between the at least one weld seam and the side edge. Claim 2 In claim 1, a pair of at least one weld seam induces a shape in which the interior narrows. Claim 3 In claim 1, the tubular body is a back roll made of two or more layers of film. Claim 4 A bag roll according to claim 3, wherein at least one of the layers is ethylene vinyl alcohol. Claim 5 In claim 3, a bag roll, wherein at least one of the layers is made of at least one of polyethylene, bioplastic, polylactic acid, starch base, or plant base. Claim 6 In claim 1, the upper edge of the bag in the flat double-layer state has a sinusoidal shape, a bag roll. Claim 7 In claim 1, the lower edge of the bag in the flat double-layer state has a sinusoidal shape, a bag roll. Claim 8 In claim 1, the relationship between the flat two-ply width WA of the larger opening diameter and the flat two-ply width WC of the narrower opening diameter is expressed as 0.60WA ≤ WC ≤ 0.95WA, a back roll. Claim 9 A cassette comprising a cassette body having a receptacle for receiving a bag roll according to claim 1, wherein the bag roll is received within the cassette body and the free end of the bag roll is discharged from the cassette body through an upper opening of the receptacle. Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete Claim 14 delete Claim 15 delete Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete Claim 21 delete Claim 22 delete Claim 23 delete Claim 24 delete Claim 25 delete Claim 26 delete Claim 27 delete Claim 28 delete Claim 29 delete Claim 30 delete Claim 31 delete Claim 32 delete Claim 33 delete Claim 34 delete Claim 35 delete Claim 36 delete Claim 37 delete Claim 38 delete Claim 39 delete Claim 40 delete Claim 41 delete Claim 42 delete Claim 43 delete Claim 44 delete Claim 45 delete Claim 46 delete Claim 47 delete Claim 48 delete

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