Resealable paper-based packaging

Abstract

A bag includes a first side panel having a pair of first side panel lateral edges and a first side panel inward-facing surface, and a closure on an opposite side of the bottom, the closure releasably connecting the first side panel to the second side panel. The closure includes a first flexible angle. The first flexible angle includes a first inner portion joined to the first side panel inside the interior volume and a first outer portion extending from the first inner portion to outside the interior volume. The closure includes a repositionable pressure-sensitive adhesive releasably engaging the first outer portion with the second side panel inward-facing surface. A free flange extends from the first outer portion. The free flange is free of the repositionable pressure-sensitive adhesive. The first side panel and the second side panel are greater than about 80% by weight paper.

Description

[Technical field]

[0001] Resealable paper-based packaging [Background technology]

[0002] Resealable, renewable packaging is desirable to consumers. Rigid, renewable packaging made from paperboard, corrugated paperboard, glass, and plastic can meet such a need. For certain products, rigid packaging may be undesirable for several reasons.

[0003] Many products are packaged in flexible plastic film bags. Flexible plastic film bags can be lightweight, strong, and inexpensive. Plastic film bags can be provided with a mechanism for resealing the bag after the package is initially opened. For example, bags of dry foods are typically resealable with a twist tie. Certain products, including soluble unit dose laundry and dishware products, are sold in flexible plastic film bags that include interlocking closure mechanisms. A common interlocking closure mechanism includes a slide seal, where the slide mechanism includes a plow that pushes apart the tongue and groove connection upon opening and a guide that reseals the connection. Press seal type interlocking closure mechanisms, such as VELCRO®, tongue and groove connections, and interlocking knobs, that can be opened and closed directly by the user's fingers, are also common. The closure mechanisms, like the flexible plastic film bags, are typically constructed of plastic materials, since plastic materials provide the necessary properties of flexibility for the interlocking mechanism to interlock and rigidity to resist unintentional opening. Summary of the Invention [Problem to be solved by the invention]

[0004] Given the constraints, there continues to be an unmet need for reclosable bags that consumers can conveniently collect in the recycling stream. [Means for solving the problem]

[0005] A bag comprising: a first side panel having a pair of first side panel lateral edges and a first side panel inward facing surface; a second side panel opposite the first side panel and having a second side panel inward facing surface opposite the first side panel inward facing surface, the second side panel being connected to the first side panel across a bottom of the bag, the second side panel having a pair of second side panel lateral edges, each of the first side panel lateral edges being joined to an opposing second side panel lateral edge; and a closure opposite the bottom and extending along a longitudinal axis, the closure peelably connecting the first side panel and the second side panel, the closure and a portion of the first side panel inward facing surface. a closure, a portion of the second side panel inwardly facing surface and a bottom defining an interior volume, the closure comprising a first flexible angle extending along a longitudinal axis, the first flexible angle including a first inner portion joined to the first side panel inside the interior volume and a first outer portion extending from the first inner portion to an outside of the interior volume, a repositionable pressure sensitive adhesive directly or indirectly releasably engaging the first outer portion to the second side panel inwardly facing surface, and a free flange extending from the first outer portion along at least a portion of the longitudinal axis, the free flange being free of the repositionable pressure sensitive adhesive, Optionally, the bag further comprises a second flexible angle extending along the longitudinal axis, the second flexible angle comprising a second outer portion joined to the second side panel inwardly facing surface outside the interior volume and a second inner portion extending from the second outer portion into the interior of the interior volume, the repositionable pressure sensitive adhesive releasably engaging the first outer portion with the second inner portion thereby indirectly releasably engaging the first outer portion with the second side panel inwardly facing surface via the second inner portion, the second inner portion having a second inner portion distal end directed toward the interior volume. [Brief description of the drawings]

[0006] [Figure 1] FIG. [Diagram 2]FIG. 2 is a cross-sectional perspective view of the upper portion of the bag. [Diagram 3] FIG. 2 is a cross-sectional perspective view of the upper portion of the bag. [Figure 4] FIG. 2 is a cross-sectional view of an inverted bag containing items. [Diagram 5] FIG. 1 is a perspective view of a bag having a removable tear strip. [Figure 6] FIG. 13 is a partial cross-sectional view of a bag in which adhesive is on a backing layer joined to a second inner portion. [Figure 7] FIG. 13 is a partial cross-sectional view of a bag with a portion of the adhesive on a backing layer bonded to the second inner portion and a portion of the adhesive on a backing layer bonded to the first outer portion. [Figure 8] FIG. [Figure 9] 2 is a side view of the first side panel with the inward facing surface of the first side panel facing the viewer and showing the first flexible flange, the release zone, and the repositionable pressure sensitive adhesive. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The term "joined" includes configurations in which an element is directly secured to another element by directly bonding the element to the other element, in which an element is indirectly secured to another element by fastening the element to an intermediate member which is then fastened to the other element, and in which one element is integral with another element, i.e., one element is essentially a part of the other element. The term "joined" includes configurations in which an element is secured to another element at a selected location, as well as configurations in which an element is completely secured to another element over the entire surface of the element. The term "joined" includes any known method by which elements can be secured together.

[0008] Recycling streams for paper products are readily available to many consumers. Thus, paper packaging can be conveniently collected by consumers in the recycling stream. Many consumers consider bags to be the preferred packaging for consumer goods. Bags have many advantages when compared to rigid packaging, including but not limited to being lightweight, strong, and inexpensive. In particular, paper-based bags offer an opportunity to satisfy an unmet consumer need to be able to collect paper bags in the paper recycling stream.

[0009] For many products packaged in bags, consumers and manufacturers desire to have a closure mechanism that is easy to open and securely closes. This may be especially true for bags that contain multiple disposable products that a consumer removes from time to time for use, with the remaining disposable products being stored within the bag for later use.

[0010] The bag 10 is shown in FIG. 1. The bag 10 may include a first side panel 20, a second side panel 30, and a closure 40. The second side panel 30 may be connected to the first side panel 20 across a bottom 60 of the bag 10. The first side panel 20 and the second side panel 30 may be separate pieces that are joined to each other at the bottom 60 of the bag 10. Optionally, the first side panel 20 and the second side panel 30 may be continuous. For example, the first side panel 20 and the second side panel 30 may be formed of a single substrate that is folded over at the bottom 60. A portion of the first side panel 20, a portion of the second side panel 30, and the closure 40 may together define an interior volume 50. The interior volume 50 may accommodate a plurality of items 2. The first side panel 20 may be continuous with the second side panel 30 across the bottom 60 of the bag 10.

[0011] The first side panel 20 can have a pair of first side panel lateral edges 70 and a first side panel inwardly facing surface 80. The second side panel 30 can be opposite the first side panel 20 and can have a second side panel inwardly facing surface 90 that faces the first side panel inwardly facing surface 80. The second side panel 30 can have a pair of second side panel lateral edges 100. Each of the first side panel lateral edges 70 can be joined to an opposing second side panel lateral edge 100.

[0012] The first side panel 20 can have a first side panel outwardly facing surface 82 opposite the first side panel inwardly facing surface 80. Similarly, the second side panel can have a second side panel outwardly facing surface 92 opposite the second side panel inwardly facing surface 90.

[0013] The bottom 60 of the bag 10 can be configured in a variety of ways. The bottom 60 can be formed by joining the first and second side panels 20 and 30 at the bottom. The first and second side panels 20 and 30 can be formed from a single continuous piece of material that is folded twice at the bottom 60 to form the flat bottom 60 of the bag 10. Gussets and seals can be used on one or both of the first and second side panels 20 and 30 to provide the desired shape of the bottom 60 of the bag 10. Additionally, gussets and seals can be used on the lateral edges of the first and second side panels 20 and 30 adjacent the bottom 60 to provide the desired shape of the bottom 60 of the bag 10. Gussets and seals can also be used at other locations along the lateral edges of the first and second side panels 20 and 30 to provide the desired shape of the lateral edges of the bag 10 as the bag 10 is filled.

[0014] The closure 40 can be opposite the bottom 60 and can extend along a longitudinal axis L. The longitudinal axis L can extend from the first and second side panel lateral edges 70 and 100 on one side to the first and second side panel lateral edges 70 and 100 on the other side. The closure releasably connects the first and second side panels 20 and 30. The closure 40 can include a first flexible angle 120 extending along the longitudinal axis L (FIG. 2). The first flexible angle 120 can include a first inner portion 130 joined to the first side panel 20 inside the interior volume 50. The first flexible angle 120 can include a first inner portion 130 joined to the first side panel inwardly facing surface 80. The first flexible angle 120 may include a first outer portion 140 that extends from the first inner portion 130 to outside the interior volume 50. The first flexible angle 120 may be flexible about a location where the first outer portion 140 extends from the first inner portion 130. The first outer portion 140 may be pivotable back and forth about a location where the first outer portion 140 extends from the first inner portion 130. The first inner portion 130 is the portion of the first flexible angle 120 that is joined to the first panel inward facing surface 80. The first outer portion 140 is referred to as outer because it is outside the interior volume 50 and the contents of the bag 10 may not contact the first outer portion 140 when the closure 40 of the bag 10 is closed.

[0015] The closure 40 may include a repositionable pressure sensitive adhesive 150 that releasably engages the first outer portion 140 to the second side panel inwardly facing surface 90. Such a configuration may seal the interior volume 50 of the bag 10 from the external environment and may allow the bag to be opened by disengaging, e.g., peeling, the first outer portion 140 from the second side panel inwardly facing surface 90. In the configuration shown in FIG. 2, the interior volume 50 is defined by a portion of the first side panel 20, a portion of the second side panel 30, and the first interior component 130. The first interior portion 130 is referred to as interior because it defines a portion of the interior volume 50 and the contents of the bag 10 may contact the first interior portion 130 when the bag 10 is not opened. The repositionable pressure sensitive adhesive 150 may be releasably engaged with one of the second side panel inwardly facing surface 90 and the first outer portion 140. Optionally, adhesive 150 can be applied to both the second side panel inwardly facing surface 90 and the first outer portion 140 oriented toward the second side panel inwardly facing surface 90 .

[0016] The closure 40 may further comprise a free flange 160 extending from the first outer portion 140 along at least a portion or all of the longitudinal axis L. The free flange 160 may be free of the repositionable pressure sensitive adhesive 150. With such a configuration, the free flange 160 may provide a longitudinally extending flange that allows a user of the bag 10 to peel the first outer portion 140 and the second side panel 30 from one another by pinching the first side panel inwardly facing surface 80 between the thumb and index finger of one hand of the user and grasping the second side panel 30 with the other hand. Optionally, the free flange 160 may be peeled from the second side panel 30 by peeling the free flange 160 and the second side panel 30 from one another by pulling one or the other or both away from the other. The first side panel 20 may include a thicker caliper substrate than the free flange 160 such that the first side panel 20 is more rigid than the free flange 160. Such a configuration may pinch the free flange 160 and provide a firm surface for a user's opposing fingers to pinch against the first side panel 20. The repositionable pressure sensitive adhesive 150 resists separation of the first outer portion 140 from the second side panel 30 such that the bag 10 remains closed unless deliberate force is applied to open the bag 10. The free flange 160 may be a flexible and / or slippery material that is difficult to pinch tightly between a user's thumb and index finger. This may reduce the likelihood of the bag 10 opening by simply gripping the free flange 160 and peeling the first outer portion 140 away from the second side panel inwardly facing surface 90. The free flange 160 may be coated with a slippery coating so that the free flange 160 cannot be easily gripped or pinched against the first side panel inwardly facing surface 80 .

[0017] The free flange 160, the first outer portion 140, and the first inner portion 130 may be a continuous substrate. That is, the free flange 160, the first outer portion 140, and the first inner portion 130 may be formed of a single substrate. The portion of the substrate joined to the first side panel 20 may be the first inner portion 130. The portion of the substrate extending from the first inner portion 130 engaged with the repositionable pressure sensitive adhesive 150 may be the first outer portion 140. The free flange 160 may be pivotable back and forth about the location where the free flange 160 extends from the first outer portion 140.

[0018] The free flange 160 may be recessed relative to the top edges 11 of the first and second side panels 20 and 30, which are opposite the bottom 60. This requires a user of the bag 10 to exert effort in locating the free flange 160 so that the bag 10 can be opened. The bag 10 can be opened by somehow grasping the free flange 160, applying a peel force to the first outer portion 140 with one hand, and peeling the first outer portion 140 from the repositionable pressure sensitive adhesive 150 bonded to the second panel 30, which can be held with the other hand. Optionally, the repositionable pressure sensitive adhesive 150 may be bonded to the first outer portion 140, and the bag 10 can be opened by peeling the first outer portion 140 and the repositionable pressure sensitive adhesive 150 with one hand from the second panel 30, which can be held with the other hand. The repositionable pressure sensitive adhesive 150 may be on a surface selected from the second panel 30, the first outer portion 140, and combinations thereof.

[0019] The repositionable pressure-sensitive adhesive 150 can include a backing layer and an adhesive composition. The adhesive composition can be carried on the backing layer. The backing layer can be bonded to the first outer portion 140. In such a configuration, the adhesive composition can be releasably engaged with the second side panel inwardly facing surface 90. The backing layer may be bonded to the second side panel inwardly facing surface 90. In such a configuration, the adhesive composition can be releasably engaged with the first outer portion 140. Optionally, the repositionable pressure-sensitive adhesive 150 can be a mixture of adhesive compositions, with a portion of the adhesive composition carried on the backing layer bonded to the first outer portion 140 and a portion of the adhesive composition carried on the backing layer bonded to the second side panel inwardly facing surface 90. Such a configuration is similar to laminating two single-sided adhesive tapes together with the adhesive sides of each tape facing each other.

[0020] In a configuration in which the first outer portion 140 is directly engaged with the second side panel inwardly facing surface 90, when the closed bag 10 is inverted, the closure 40 can prevent the contents of the bag 10 from spilling due to the peel resistance between the repositionable pressure-sensitive adhesive 150 and the elements to which it is releasably engaged. The peel force can result from the lateral pressure of the contents of the bag 10 pushing outwardly against the first and second side panels 20, 30, and from the weight of the contents of the bag 10 on the closure 40.

[0021] The free flange 160 can have a free flange length along the longitudinal axis L. The free flange length can be less than or equal to the closure length. The closure length and the free flange length can be measured along the longitudinal axis L. The closure length and the free flange length are scalar quantities. The closure length is a measure of the length of the portion of the closure 40 that is intended to be opened and resealed. The free flange length is the length of the free flange along the longitudinal axis L. The closure length can be the length from the first and second side panel lateral edges 70 and 100 on one side to the first and second side panel lateral edges 70 and 100 on the opposite side.

[0022] The free flange length may be the same as the closure length. In such a configuration, a user may grasp or pinch the free flange 160 at any location along the longitudinal axis L to open the package, for example, by applying a peel force to the free flange 160 with one hand to peel the first outer portion 140 and the second side panel inwardly facing surface 90 held with the other hand away from each other. This may allow the bag 10 to be opened more easily than if the free flange 160 were shorter. For example, the free flange length may be less than about 20%, optionally less than about 10%, and optionally less than about 5% of the closure length. Such a configuration may make it difficult for a user to locate the free flange 160 to easily open the bag 10. The free flange 160 may be located at or near the midpoint of the closure 40 along the longitudinal axis L. Optionally, the free flange 160 may be located closer to a lateral edge of the bag 10 than the midpoint of the closure 40 along the longitudinal axis L. The free flange 160 can have a length along the longitudinal axis L of from about 10 mm to about 40 mm, optionally from about 15 mm to about 30 mm.

[0023] Optionally, the closure 40 may include two free flanges 160. Optionally, one of the free flanges 160 may be located closer to one set of lateral edges of the bag 10 than the midpoint of the closure 40 along the longitudinal axis L, and the other free flange 160 may be located closer to the opposite set of lateral edges of the bag 10 than the midpoint of the closure 40 along the longitudinal axis L. In this configuration, the closure 40 may have two free flanges 160, each of which is closer to one set of lateral edges than the midpoint of the closure 40 along the longitudinal axis L. That is, the two free flanges 160 may be located toward, at, proximal to, or near both ends of the closure 40. Such a configuration allows for ambidextrous opening of the bag 10 in that at least one free flange 160 is located on a set of lateral edges that a user tends to point away from his or her body when opening the bag 10. The bag 10 may include a second flexible angle 170 that provides the closure 40 with an additional mechanism for preventing the closed bag 10 from opening when the closed bag 10 is inverted and the contents of the bag 10 apply lateral pressure to the first and second side panels 20 and 30 (FIG. 3) as compared to the bag shown in FIG. 2. Similar to the first flexible angle 120, the second flexible angle 170 may extend along the longitudinal axis L. The second flexible angle 170 may include a second outer portion 180 joined to the second side panel inwardly facing surface 90 outside the interior volume 50. The second flexible angle 170 may include a second inner portion 190 extending from the second outer portion 180 to the interior of the interior volume 50. The repositionable pressure sensitive adhesive 150 may releasably engage the first outer portion 140 with the second inner portion 190, thereby indirectly releasably engaging the first outer portion 140 with the second side panel inwardly facing surface 90 via the second inner portion 190. The second inner portion 190 may have a second inner portion distal end 200 directed toward the interior volume 50.The second interior portion 190 is referred to as interior because the second interior portion 190 defines or forms a portion of the interior volume 50 and the contents of the bag 10 may contact the second interior portion 190 when the bag 10 is closed. In the configuration shown in FIG. 3, the interior volume 50 is defined by a portion of the first side panel 20, a portion of the second side panel 30, the first interior portion 130, and the second interior portion 190.

[0024] The second flexible angle 170 can be flexible about a location where the second inner portion 190 extends from the second outer portion 180. The second inner portion 190 can be pivotable back and forth about a location where the second inner portion 190 extends from the second outer portion 180. The second outer portion 180 is the portion of the second flexible angle 170 that is joined to the second panel inwardly facing surface 90. The second flexible angle 170 can be a continuous substrate; that is, the second flexible angle 170 can be formed from a single substrate.

[0025] The repositionable pressure-sensitive adhesive 150 can include a backing layer and an adhesive composition. The adhesive composition can be carried on the backing layer. The backing layer can be bonded to the first outer portion 140. In such a configuration, the adhesive composition can be releasably engaged with the second inner portion 190. The backing layer can be bonded to the second inner portion 190. In such a configuration, the adhesive composition can be releasably engaged with the first outer portion 140. Optionally, the repositionable pressure-sensitive adhesive 150 can be a mixture of the adhesive composition 150, with a portion of the adhesive composition 150 carried on a backing layer bonded to the first outer portion 140 and a portion of the adhesive composition 150 carried on a backing layer bonded to the second inner portion 190. Such a configuration is similar to laminating two single-sided adhesive tapes together with the adhesive sides of each tape facing each other.

[0026] The repositionable pressure sensitive adhesive 150 can be disposed on a surface selected from a surface of the first outer portion 140 facing the second inner portion 190, a surface of the second inner portion 190 facing the first outer portion 140, and combinations thereof. The repositionable pressure sensitive adhesive 150 can be provided on a backing layer bonded to each portion.

[0027] In configurations that include the second flexible angle 170, the bag can be opened in a manner similar to the manner described above in which the free flange 160 can be used to peel the first outer portion 140 and the second side panel inwardly facing surface 90 from one another, with the difference being that the free flange 160 is used to generate a peel force to peel the first outer portion 140 and the second inner portion 190 from one another. In FIG. 3, the free flange 160 has a free flange length that is shorter than the closure length. In such configurations, the free flange 160 can be a tab that the user can manipulate to provide the force necessary to peel the closure 40 off. Providing a relatively short free flange 160 can require significant cognitive effort from the user to recognize the flange 160 and how to manipulate the flange 160 to open the closure 40.

[0028] At least a portion of the free flange 160 can be a contrasting color from the first outer portion 140. Such a configuration can be helpful to a user in locating the free flange 160 in order to open the closure. Having the free flange 160 a contrasting color from the rest of the closure can be particularly practical when the free flange 160 has a short free flange length since a user may only have a small tab to use to peel the closure 40.

[0029] A bag 10 having a closure 40 with a first flexible angle 120 and a second flexible angle 170 may be suitable for retaining the contents of the bag 10 when the bag 10 is inverted. When the bag 10 is in an upright position with the closure 40 facing up, the first outer portion 140 and the second inner portion 190 tend to align vertically, even with slight variations in orientation resulting from bulging and wrinkling of the bag 10 and the associated deformation of the closure 40. When the bag 10 is inverted, the contents of the bag 10 ride on the closure 40, and the lateral pressure of the contents of the bag 10 tends to push the first side panel 20 and the second side panel 30 apart (FIG. 4). The first and second flexible angles 120, 170 allow the first outer portion 140 and the second inner portion 190 to counter-rotate relative to the first inner portion 130 and the second outer portion 180, respectively, providing a somewhat straight or slack line between the first inner portion 130 and the second outer portion 180. That is, the first outer portion 140 can pivot about the location where the first outer portion 140 extends from the first inner portion 120, and the second inner portion 190 can pivot about the location where the second inner portion 190 extends from the second outer portion 180.

[0030] When bag 10 is inverted, closure 40 is held closed by the connection between first outer portion 140 and second inner portion 190 provided by repositionable pressure sensitive adhesive 150. The shear strength of repositionable pressure sensitive adhesive 150 and the shear strength of the connection between repositionable pressure sensitive adhesive 150 and the surface to which it is releasably engaged or the opposing repositionable pressure sensitive adhesive 150 resists separation of first outer portion 140 and second inner portion 190 due to shear movement of the portions relative to one another.

[0031] In general, repositionable pressure-sensitive adhesives 150 tend to be stronger when subjected to pure normal or pure shear forces compared to peel forces. Peel forces are applied locally to the peel interface, and therefore tend to produce locally high normal and / or shear stresses at the peel interface. Pure normal and pure shear forces are applied over a larger area than peel forces, and therefore tend to produce relatively low normal and shear stresses. In the peel mode of separation, most, if not all, of the force acts at or proximate to the peel interface, where there is a limited area or volume through which the force can be transferred as stress, resulting in locally high normal and / or shear stresses.

[0032] 3, when the bag 10 including the closure 40 with the first flexible angle 120 and the second flexible angle 170 is in an upright position, a user can grasp the free flange 160 and apply a peel force to the interface between the first outer portion 140 and the second inner portion 190. The peel strength of the repositionable pressure sensitive adhesive 150 governs the ease or difficulty a user experiences in peeling the first outer portion 140 and the second inner portion 190 from one another.

[0033] 4, when the closed bag 10 is inverted, the repositionable pressure-sensitive adhesive 150 connecting the first outer portion 140 and the second inner portion 190 is primarily subjected to shear loads, such that the first outer portion 140 and the second inner portion 190 are firmly connected to one another and the items 2 within the interior volume 50 of the bag 10 will not spill out of the bag 10.

[0034] The bag 10 may have a removable tear strip 210 to provide a structure that prevents the closure 40 from unintentionally opening after the bag 10 has been sealed at the packaging facility until a user desires to access the item 2 (FIG. 5). The removable tear strip 210 may be a predetermined line of weakness adjacent the top of the bag. The removable tear strip 210 may join the first side panel 20 to the second side panel 30. The line of weakness may be a series of through perforations, through slits, partial perforations, notches, or other structural weakening in one or both of the first side panel 20 and the second side panel 30. The line of weakness may be an intermittent cut and may be formed by a laser. The removable tear strip 210 may have an initiation end 215 for concentrating and directing a tear force applied by a user to the removable tear strip 210.

[0035] The first side panel 20 and the second side panel 30 may be joined to one another at the first side panel lateral edge 70 and the second side panel lateral edge 100, the top 65, and / or the bottom 60 by heat sealing, glue, adhesive, stitching, etc. Optionally, the first side panel 20 and the second side panel 30 may be contiguous with one another across any one of the first side panel lateral edge 70 and the second side panel lateral edge 100, the top 65, or the bottom 60, as described herein. One or both of the first side panel inward facing surface 80 and the second side panel inward facing surface 90 may be coated with a heat-sealable composition.

[0036] The repositionable pressure sensitive adhesive 150 may be carried on a backing layer 155 (FIG. 6). The backing layer 155 may be joined to the second inner portion 190 or the first outer portion 140. The backing layer 155 may be joined to the second inner portion 190 or the first outer portion 140 by heat sealing, glue, adhesive, stitching, or the like. The bond joining the backing layer 155 thereto may be stronger in shear, normal, and peel forces than the repositionable pressure sensitive adhesive 150 itself, such that the backing layer 155 will not separate from the portion to which it is joined when the bag 10 and contents therein are inverted.

[0037] The first inner portion 130 of the first flexible angle 120 can be joined to the first side panel 20 by heat sealing, glue, adhesive, stitching, etc. Similarly, the second outer portion 180 of the second flexible angle 170 can be joined to the second side panel 30 by heat sealing, glue, adhesive, stitching, etc.

[0038] Bag 10 may be greater than about 80% by weight paper, optionally greater than about 90% by weight paper, optionally greater than about 95% by weight paper. The greater the weight percentage of paper, the more easily bag 10 can be recycled.

[0039] The bag 10 may be a quad seal bag, a gusset bag, a back seal bag, a three side seal bag, a K seal stand up bag, a round seal stand up bag, or a normal seal stand up bag.

[0040] The repositionable pressure sensitive adhesive 150 can be provided on both the second inner portion 190 and the first outer portion 140. For example, as a non-limiting example shown in FIG. 7, a portion of the repositionable pressure sensitive adhesive 150 can be carried on the backing layer 155 joined to the second inner portion 190 and another portion of the repositionable pressure sensitive adhesive 150 can be carried on the backing layer 155 joined to the first outer portion 140. In this configuration, the bag 10 can be opened by pulling the first outer portion 140 away from the second inner portion 190 with one hand and the other hand, with a portion of the adhesive 150 remaining on the backing layer 155 joined to the first outer portion 140 and a portion of the adhesive 150 remaining on the backing layer 155 joined to the second inner portion 190. This configuration can result in similar mechanical behavior when the adhesive surfaces of two adhesive tapes are brought into face-to-face contact with each other along their lengths and then peeled away from each other, similar to when a wide tape is peeled in this manner.

[0041] The bag 10 can be opened by a method that includes multiple steps. The second side panel 30 can be grasped with one hand at the top edge 11 of the second side panel 30, where the top edge 11 is opposite the bottom 60 and outside the interior volume 50. The free flange 160 can also be grasped with another hand. The bag 10 can be opened by peeling the free flange 160 and the second side panel 30 from one another and separating the first outer portion 140 and the second inner portion 190 along the repositionable pressure-sensitive adhesive 150. Optionally, the bag 10 can be closed by reengaging the first outer portion 140 and the second inner portion 190 with one another along the repositionable pressure-sensitive adhesive 150.

[0042] Optionally, the method of opening the bag 10 can include multiple steps. The second side panel 30 can be grasped at the top edge 11 of the second side panel 30 with one hand. The free flange 160 can also be grasped with another hand. The free flange 160 and the second side panel 30 can be peeled away from one another along the repositionable pressure sensitive adhesive 150 to open the bag 10. Optionally, the method can include the step of reengaging the first outer portion 140 and the second side panel 30 together along the repositionable pressure sensitive adhesive 150 to close the bag 10.

[0043] Base material Paper is a web of cellulose fibers, optionally including small amounts of additional ingredients. To provide recyclability for the bag 10, the bag 10 can be primarily comprised of a paper-based substrate. The paper-based substrate has greater than 80% by weight cellulose fibers. The paper-based substrate may have various coatings, varnishes, inks, etc., that are common to paper-based packaging, and such materials are considered part of the paper-based substrate. The web of cellulose fibers that makes up the paper-based substrate may also contain small amounts of other additives and fillers for technical benefits, and such materials are also considered part of the paper-based substrate. The first side panel 20 and the second side panel 30 can be greater than about 80% by weight paper, optionally greater than about 90% by weight paper, and optionally greater than about 95% by weight paper. The weights of the first side panel 20 and the second side panel 30, respectively, are inclusive of coatings, varnishes, inks, additives, and fillers.

[0044] The first side panel 20 and the second side panel 30 can be paper-based. One or both of the first side panel inward facing surface 80 and the second side panel inward facing surface 90 can be coated with a thermoplastic material, or can be coated only locally if necessary, to facilitate bonding between the first side panel 20 and the second side panel 30. The coating on the first side panel inward facing surface 80 can also facilitate bonding between the first flexible angle 120 and the first side panel 20. The coating on the second side panel inward facing surface 90 can also facilitate bonding between the second flexible angle 170 and the second side panel 30. The bag 10 can be formed by folding a paper-based substrate over the bottom 60 of the bag 10, and the first side panel 20 and the second side panel 30 can be heat-sealed together to form a heat seal at the junction of the first side panel lateral edge 70 and the second side panel lateral edge 100.

[0045] Additionally, the first side panel inwardly facing surface 80 and the second side panel inwardly facing surface 90 may be coated with a polymeric material to prevent the transmission of oxygen, water, and / or water vapor through the respective panels. Similarly, the outwardly facing surfaces of the first side panel 20 and the second side panel 30 may include coatings, varnishes, or inks to impart a desired overall aesthetic, quality printing, and / or technical performance to the bag 10.

[0046] The first side panel inward facing surface 80 and the second side panel inward facing surface 90 can be coated with a thin layer of a polymer coating. The coating can be selected from, by way of non-limiting example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, polyacrylamide, linear polyacrylamide, styrene butadiene copolymer, and combinations thereof. The coating can be slot coated, spray coated, extrusion coated, dispersed, or printed onto the skeleton of the paper-based substrate. Optionally, the coating can be applied as a powder that is heated and / or compressed to form a coating. The coating on the first side panel inward facing surface 80 and / or the second side panel inward facing surface 90 can facilitate heat, acoustic, or hot melt sealing of the first side panel inward facing surface 80 and the second side panel inward facing surface 90 along the first side panel lateral edge 70 and the second side panel lateral edge 100. The inward facing surfaces can be coated at and near the locations where heat sealing is used to join the elements of the bag 10. That is, the inward facing surface portion may be uncoated. Optionally, the inward facing surface portion may be uncoated, exposing the paper to the contents of the bag 10. The paper may aid in the removal of moisture from the contents or space within the bag 10. This may be practical if the contents are soluble unit dose laundry products, as excess moisture may cause the products to form pinholes or stick together. The inward facing surface may be uncoated, which may be practical if a glue or other adhesive is used to join the elements of the bag 10 together. Optionally, the outward facing surface may be coated with a thin layer of a polymeric coating to limit or prevent moisture from entering the bag 10. Optionally, the first and second side panels 20, 30 may be a paper laminate with an inner layer of a polymeric material, which may limit or prevent moisture from entering the bag 10 and leave the paper material exposed to the interior volume 50 of the bag 10.The paper-based substrate forming the first side panel 20 and the second side panel 30, and optionally the flexible angles described herein below, may have a weight, including coatings, varnishes, inks, additives, and fillers, of from about 20 to about 500 g / m. 2 , optionally about 20 to about 300 g / m 2 , optionally about 30 to about 150 g / m 2 The first and second side panel outward facing surfaces 82, 92 may have a basis weight of about 10% by area. The first and second side panel outward facing surfaces 82, 92 may be discontinuously coated or uncoated. Less than about 10% by area, and optionally less than about 5% by area, of the first and second side panel outward facing surfaces 82, 92 may be coated. To improve recyclability, it may be beneficial to have at least one surface of each of the panels discontinuously coated, uncoated, or coated only a small area portion, such that the paper making up such panels can be easily separated from any coating used. Additionally, an uncoated, discontinuously coated, or substantially uncoated (e.g., less than about 10% by area of ​​the first and second side panel outward facing surfaces 82, 92, or a smaller percentage as discussed above) outward facing surface 82 may make it clear to a user of the bag 10 that the bag 10 is intended to be recycled in a paper recycling stream. The paper-based substrate for the side panels and flexible angles can be, by way of non-limiting example, MONDI AEGIS (84 grams per square meter white) or MONDI AEGIS (136 grams per square meter brown), sold by Mondi, PLC (Addlestone, Surrey, United Kingdom).

[0047] The first flexible angle 120 and the second flexible angle 170 may be a paper-based substrate and may incorporate coatings, varnishes, inks, additives, and fillers. The coating may be a polymer coating 225 or a partial polymer coating 225 to achieve the same effect as described above with respect to the first side panel 20 and the second side panel 30 (FIG. 8). The first flexible angle 120 and the second flexible angle 170 may each have an outwardly facing surface 220. The outwardly facing surfaces 220 may face away from each other. The first side panel inwardly facing surface 80, the second side panel inwardly facing surface 90, and at least a portion of each outwardly facing surface 220 may be coated or partially coated with a polymer coating 225. The outwardly facing surface 220 of the first flexible angle 120 may be joined to the first side panel inwardly facing surface 80 by a heat seal 230 of the polymer coating 225. The outward facing surface 220 of the second flexible angle 170 may be joined to the second side panel inward facing surface 90 by a heat seal 230 of a polymer coating 225. The polymer coating 225 may have a thickness of about 2 μm to about 50 μm, optionally about 4 μm to about 30 μm, optionally about 6 μm to about 20 μm. The polymer coating 225 may be polyethylene.

[0048] Each of the first flexible angle 120, including the free flange 160, and the second flexible angle 170 may be greater than about 80% by weight paper, optionally greater than about 90% by weight paper, and optionally greater than about 95% by weight paper. The weight of each of the first flexible angle 120, including the free flange 160, and the second flexible angle 170 includes coatings, varnishes, inks, additives, and fillers, if present in or on the respective flexible angle.

[0049] Optionally, the first flexible angle 120 and / or the second flexible angle 170 may be a polymer film. If these components are polymer films, it may be desirable for these components to comprise less than about 20% by weight, or even less than about 15% by weight, or even less than about 10% by weight of the bag 10 so that the bag 10 is recyclable in typical recycling streams. The first flexible angle 120 can be joined to the first side panel 20 by heat sealing, glue, adhesive, stitching, etc. The second flexible angle 170 can be joined to the second side panel 30 by heat sealing, glue, adhesive, stitching, etc.

[0050] Any portion of the substrate from which the repositionable pressure-sensitive adhesive 150 is to be released may be surface treated or include a release layer to ensure that the repositionable pressure-sensitive adhesive 150 will release cleanly therefrom. For example, the surface may be treated with a silicone release coating or wax. Optionally, the release layer may be a thin layer of low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, polyacrylamide, linear polyacrylamide, or similar thermoplastic polymer.

[0051] REPOSIBLE PRESSURE SENSITIVE ADHESIVE AND BACKING LAYER - Patent application The repositionable pressure sensitive adhesive 150 provides the ability to reseal the bag 10 after the closure 40 has been opened. The repositionable pressure sensitive adhesive 150 is an adhesive that adheres to a substrate by the application of pressure. The pressure sensitive adhesive 150 can have an average peak adhesion, measured according to ASTM D6195-03 (reapproved 2019) Test Method A (using a tensile tester), that decreases by less than 80%, optionally less than 60%, optionally less than 50%, optionally less than 20% after 80 open and close cycles of the pressure sensitive adhesive 150 against a surface with which the pressure sensitive adhesive 150 engages within the bag 10. Because each time a user opens and closes the bag 10, a portion of the contents of the bag 10 is likely to be removed from the bag 10, which tends to reduce the strength of the closure 40 required to increase the likelihood that the bag 10 will remain closed when the bag 10 is inverted, it is believed that the peak adhesion will degrade to some degree as a function of cycles, but will not unduly impair the functionality of the closure. The repositionable pressure sensitive adhesive 150 may be repositionable from about 10 to about 200 times. The repositionable pressure sensitive adhesive 150 may be repositionable for about 1 to about 24 months. Bond strength may be affected by the amount of pressure applied and the properties of the substrate, such as smoothness and surface energy. The repositionable pressure sensitive adhesive 150 tends to exhibit viscoelastic behavior. The repositionable pressure sensitive adhesive 150 forms a bond to the substrate by flowing the repositionable pressure sensitive adhesive and wetting the substrate with the repositionable pressure sensitive adhesive 150. The integrity of the bond is maintained by the cohesive strength of the repositionable pressure sensitive adhesive 150 and the molecular interactions between the repositionable pressure sensitive adhesive 150 and the substrate. The repositionable pressure sensitive adhesive 150 is permanently tacky and can form a viscoelastic bond that adheres when pressure is manually applied, and does not require activation, such as water, solvents, or heat.

[0052] The repositionable pressure sensitive adhesive 150 can include a variety of compositions and can be comprised of elastomeric polymers with or without tackifiers. The repositionable pressure sensitive adhesive 150 can be selected from homopolymers or copolymers of acrylic and methacrylic esters, butyl rubber-based systems, silicones, nitriles, styrene block copolymers, ethylene vinyl acetate, urethanes, vinyl esters and amides, olefin copolymer materials, natural or synthetic rubbers, and mixtures thereof. The repositionable pressure sensitive adhesive 150 can be selected from rubber adhesives, acrylic adhesives, modified acrylic adhesives, silicone adhesives, and combinations thereof. Rubber or rubber-based repositionable pressure sensitive adhesives 150 may not perform as well as other repositionable pressure sensitive adhesives 150.

[0053] The repositionable pressure sensitive adhesive 150 is a removable repositionable pressure sensitive adhesive 150 in that the repositionable pressure sensitive adhesive 150 can be separated from the substrate without damaging the repositionable pressure sensitive adhesive 150 itself or the substrate. The repositionable pressure sensitive adhesive 150 can provide for approximately 10 to 200 openings and resealings of the closure 40. The repositionable pressure sensitive adhesive 150 can be AR101, SR106, R1490M, SR692N, available from AVERY DENNISON, Glendale, California, United States of America.

[0054] The repositionable pressure sensitive adhesive 150 can be applied directly to the substrate or carried on a backing layer 155 that is bonded to the substrate such that the backing layer 155 is located between the repositionable pressure sensitive adhesive 150 and the substrate. The backing layer can be a paper, film, or foil. Suitable backing layers 155 include polymers including, but not limited to, polyethylene terephthalate, polyethylene, polypropylene, copolymers such as polyethylene-propylene, polyethylene-octene, olefin block copolymers, and polystyrene films. The backing layer 155 can be selected from polyester, polypropylene, polyethylene, polyethylene / polypropylene copolymers, UHMS-PE, polyvinyl chloride, polyimide, polyamide, polytetrafluoroethylene, polyvinyl alcohol, polyurethane, polyvinyl fluoride, and combinations thereof. The backing layer 155 can be selected from crepe paper, flatback paper, kraft paper, machine polished uncoated kraft paper, machine finished uncoated kraft paper, parchment, supercalendered kraft paper, clay coated kraft paper, polycoated kraft paper, glassine paper, and combinations thereof. The backing layer 155 can be selected from cotton cloth, glass cloth, vinyl cloth, and combinations thereof. The backing layer 155 can be fibrous. The backing layer 155 can be aluminum, copper, lead, stainless steel, and combinations thereof. The backing layer 155 can be neoprene. The backing layer 155 has a weight of about 50 g / m 2 ~about 400g / m 2 Grammage of approximately 80g / m2 (optional) 2 ~about 300g / m 2 Grammage of approximately 100 g / m2 is optional 2 ~about 200g / m 2 The paper-based backing layer 155 may be beneficial in improving the recyclability of the bag 10.

[0055] The backing layer 155 can be bonded to the substrate by heat sealing, glue, adhesive, stitching, etc. The repositionable pressure sensitive adhesive 150 can be a continuous coating on one side of the backing layer 155. Optionally, the repositionable pressure sensitive adhesive 150 can coat less than the entirety of one side of the backing layer 155. The repositionable pressure sensitive adhesive 150 can be a discontinuous coating on one side of the backing layer 155, e.g., islands of repositionable pressure sensitive adhesive 150. The repositionable pressure sensitive adhesive 150 can have a thickness of about 5 microns to about 500 microns.

[0056] The repositionable pressure sensitive adhesive 150 may be on a surface selected from the first outer portion 20, the second side panel inwardly facing surface 90, and combinations thereof.

[0057] The repositionable pressure sensitive adhesive 150 may be a water-based acrylic repositionable pressure sensitive adhesive. The repositionable pressure sensitive adhesive 150 may be a water-based styrene butadiene copolymer latex. The repositionable pressure sensitive adhesive 150 may be a rubber-based repositionable pressure sensitive adhesive in a solvent solution. The repositionable pressure sensitive adhesive 150 may be a polyurethane elastomer-based adhesive. The repositionable pressure sensitive adhesive 150 may be IVY GRIP TAPE, available from HONGXIN-SHOP on www.amazon.com as of March 26, 2021. The repositionable pressure sensitive adhesive 150 may be a hot melt adhesive. The hot melt repositionable pressure sensitive adhesive 150 may provide greater flexibility in the formulation chemistry of such hot melts.

[0058] The repositionable pressure sensitive adhesive 150 can be, by way of non-limiting example, TACKWHITE NA 55, TACKWHITE AMC 20, TACKWHITE AMC 3 D, TACKWHITE AMC 24, TACKWHITE AMC 4 D, TACKWHITE AP 5M, TACKWHITE SB4 B2, TACKWHITE SB5 SL5, SOLACRIL SPR 12 M3, SOLACRIL WS 33, SOLACRIL 44, SOLACRIL WS 60, SOLACRIL WS 40 N, SOLACRIL 206, SOLACRIL 306, SOLACRIL 203, SOLACRIL 303, or TACKMELT R 008, sold by ICHEMCO (Milan, Italy). The repositionable pressure sensitive adhesive can be ROBOND PS-9260, ROBOND PS-8120HV, or ROBOND PS-8942, sold by Dow, Inc., Midland, Michigan, United States of America. The repositionable pressure sensitive adhesive can be a styrene-isoprene-styrene copolymer (SIS). The repositionable pressure sensitive adhesive 150 can be SAVARE PL501ZK, sold by SAVARE ICsrl, Milano, Italy. The repositionable pressure sensitive adhesive 150 can be a blend of ethylene-vinyl acetate and styrene block copolymers, such as a fashion tape, such as FAISE TAPE, sold by www.hollywoodfashionsecrets.com. The repositionable pressure sensitive adhesive 150 can have a load at break of about 0.05 to about 0.5 MPa, according to ASTM D3165-07 (2014). The repositionable pressure sensitive adhesive 150 can have an average T peel strength of about 0.01 to about 0.5 N / mm according to ASTM D903-98(2017).

[0059] The first outer portion 140 may be releasably engaged with the second inner portion 190 by a repositionable pressure sensitive adhesive 150 on a peel zone 152 (FIG. 9). The peel zone 152 may extend approximately 100 mm 2~about 21000mm 2 The peel area is a scalar measurement of the area of ​​the peel zone 152. The peel zone 152 is where the first outer portion 140 and the second inner portion 190 are releasably engaged. The repositionable pressure sensitive adhesive 150 is the material that releasably engages the first outer portion 140 and the second inner portion 190 to one another. The peel zone 152 may be a continuous region, such as a continuous slot coated region, or may have islands of non-engaged portions of the first outer portion 140 and the second inner portion 190 that are not part of the peel zone and are not considered to be areas of the peel zone. The peel zone 152 may be a discontinuous region, such as islands, stripes, rings, etc. of repositionable pressure sensitive adhesive.

[0060] The closure length, which is a measure of the length along the longitudinal axis L of the portion of the closure 40 that is intended to be opened and resealed, can be from about 100 mm to about 420 mm. The closure height, which is a measure of the height of the portion of the closure 40 that is the repositionable pressure sensitive adhesive 150 that is intended to be opened and resealed, measured in a direction perpendicular to the longitudinal axis L, can be from about 1 mm to about 50 mm, optionally from about 5 mm to about 50 mm, optionally from about 5 mm to about 30 mm, optionally from about 10 mm to about 25 mm. Closure heights less than 1 mm, or even less than 5 mm, can be difficult for a user to properly reseal, as the user may have to be careful to identify and position the repositionable pressure sensitive adhesive 150 and fully engage the repositionable pressure sensitive adhesive 150 with the surface that the repositionable pressure sensitive adhesive is intended to engage. Closure heights greater than 50 mm can be difficult for a user to handle. A closure height of more than 50 mm may cause the closure 40 to fold or wrinkle unnecessarily when open, and adjacent portions of the repositionable pressure-sensitive adhesive 150 may engage with one another, making it difficult to properly reseal the closure 40. Additionally, a larger closure may increase the percentage of the non-paper-based portion of the bag 10, as a greater amount of the repositionable pressure-sensitive adhesive 150 may be used. Multiple openings and resealings of the closure 40 may result in contamination of the pressure-sensitive adhesive 150 or the surfaces it engages. Sources of contamination may be, by way of non-limiting example, dust from the air, dust from the contents of the bag 10, oils or other substances transferred from the user's fingers, water, or other substances to which the closure 40 is exposed when it is open. A larger closure height may make the closure 40 less susceptible to contamination. A closure height of less than 1 mm may be more susceptible to contamination than desired.

[0061] The bag 10 can accommodate an article 2 weighing from about 10 g to about 5000 g. The bag 10 can accommodate an article 2 weighing from about 100 g to about 2500 g. The bag 10 can accommodate an article 2 weighing from about 400 g to about 1800 g. The ratio of the peeled area to the mass of the article 2 accommodated in the bag 10 is about 80 mm per 100 g. 2 ~Approx. 1250mm per 100g 2 , optional approx. 250mm per 100g 2 ~Approximately 1000mm per 100g 2 , optional approx. 300mm per 100g 2 ~Approx. 800mm per 100g 2 It can be said that:

[0062] For a bag 10 including a first flexible angle 120 and a second flexible angle 170 as described herein and containing a consistent unit of article 2, the product of the ASTM D3165-07(2014) load at break and peel area of ​​the repositionable pressure sensitive adhesive 150 can be from about 2 to about 500 times, optionally from about 20 to about 300 times, optionally from about 50 to about 200 times, optionally from about 80 to 180 times the cumulative weight of the article 2 contained in the bag 10. The ASTM D3165-07(2014) load at break is reported in megapascals. Conversion of the ASTM D3165-07(2014) load at break can be avoided in the above relationship by giving the peel area in square meters and the force induced by the weight of the article 2 in the bag 10 in meganewtons. Without being bound by theory, it is believed that providing the repositionable pressure-sensitive adhesive 150 with a product of the load at break and peel area per ASTM D3165-07(2014) in the range of about 2 to about 500 times, optionally about 5 to about 300 times, optionally about 5 to about 100 times, optionally about 2 to about 50 times, and optionally about 2 to about 20 times the weight of the article 2 contained within the bag 10 sufficiently limits the likelihood of viscoelastic failure of the adhesive 150 under expected use over the expected lifecycle of the bag 10 and the article 2 contained therein.

[0063] The bag 10 of Example 1 was constructed as follows. The bag 10 had a length along the longitudinal axis L of 320 mm. The bag 10 had a height, measured perpendicular to the longitudinal axis, of 300 mm. The first side panel 20 and the second side panel 30 were made of a 130 g / m 2 The first side panel inward surface 80 and the second side panel inward surface 90 had a 6 μm polyethylene coating. The first flexible angle 120 was constructed from two layers of 50 mm wide 3M SCOTCH 244 yellow masking paper tape, mated and assembled with the adhesive sides facing each other. The second flexible angle 170 was constructed from two layers of 40 mm wide 3M SCOTCH 244 yellow masking paper tape, mated and assembled with the adhesive sides facing each other. The first flexible angle 120 and the second flexible angle 170 were attached to their respective side panels by 12 mm double-sided tape TESA FIX 4970. A 12.5 mm wide FASHION TAPE from HOLLYWOOD FASHION SECRETS was used as the repositionable pressure sensitive adhesive 150 and adhered to the exposed adhesive of the 3M SCOTCH 244 yellow masking paper tape forming the first outer portion 140 of the first flexible angle 170 and then engaged with the second inner portion 190. The bag 10 was constructed in a room conditioned at 23° C. and 50% relative humidity. A FINAT 2 kg roller was used to engage the tape with the repositionable pressure sensitive adhesive 150 of Example 1. The first side panel 20 and the second side panel 30 were not joined at the bottom 60 of the bag. The construction of Example 1 is generally similar to that shown in FIG. 4.

[0064] comparison The bag 10 of Example 2 was constructed as follows: The bag 10 had a length along the longitudinal axis L of 320 mm. The bag 10 had a height, measured perpendicular to the longitudinal axis, of 300 mm. The first side panel 20 and the second side panel 30 were made of a 130 g / m 2The first side panel inward surface 80 and the second side panel inward surface 90 had a 6 μm polyethylene coating. The first flexible angle 120 was constructed from two layers of 50 mm wide 3M SCOTCH 244 yellow masking paper tape, assembled with the adhesive sides facing each other. The second flexible angle 170 was constructed from two layers of 40 mm wide cut 3M SCOTCH 244 yellow masking paper tape, assembled with the adhesive sides facing each other. Unlike Example 1 above, for the first flexible angle 120, the first outer portion 140 and the first inner portion 130 were attached together to the first side panel 20 by a 25 mm wide double-sided tape, TESA FIX 4970. Similarly, unlike Example 1 above, for the second flexible angle 170, the second inner portion 190 and the second outer portion 180 were attached together to the second side panel 30 by a 25 mm wide double sided tape, TESA FIX 4970. A 12.5 mm wide FASHION TAPE sold by HOLLYWOOD FASHION SECRETS was used as the repositionable pressure sensitive adhesive 150 and adhered to the exposed adhesive of the 3M SCOTCH 244 yellow masking paper tape forming the first outer portion 140 of the first flexible angle 170 and then engaged with the second inner portion 190. comparison Example 2 illustrates a closure in which a first flexible angle 120 and a second flexible angle 170 are adhered to the first side panel 20 and the second side panel 30, respectively. The bag 10 was constructed in a conditioned room at 23° C. and 50% relative humidity. A FINAT 2 kg roller was used to engage the tape with the repositionable pressure sensitive adhesive 150 of Example 1. The first side panel 20 and the second side panel 30 were not joined at the bottom 60 of the bag.

[0065] Example 1 and Comparative Example Two bags were inverted and filled with approximately 1700 g of ARIEL 3-in-1 laundry pods (a soluble unit dose detergent product).

[0066] Example 1 and Comparative Example2, static load tests were performed by hanging each filled bag upside down so that a load was applied to the closure 40. Each bag 10 was suspended by a 50 mm wide PET tape sling extending from the center of the top edge 11 to 150 mm beyond the vertical extent of each side panel. The length of time it took for the closure 40 of each bag 10 to open under the load of the bag's 10 contents was recorded.

[0067] Dynamic load testing was also performed by clamping a filled, inverted test bag 10 to a 250N load cell. The bag 10 was lifted 15cm and dropped. The filled bag 10 was allowed to free fall a distance of 15cm before being caught by a sling. The impact energy from the free falling bag 10 was recorded in Newtons as the peak force by the load cell.

[0068] Example 1 and Comparative Example The results of static and dynamic load tests of Example 2 are shown below in Table 1. Example 1 is a bag having a general structure similar to that shown in Figure 4 in that a first flexible angle 120 and a second flexible angle 170 are provided such that a first outer portion 140 and a second inner portion 190 are capable of counter-rotating relative to a first inner portion 130 and a second outer portion 180, respectively. comparison Example 2 is a bag 10 with a first outer portion 140 adhered to the first side panel 20 and a second inner portion 190 adhered to the second side panel 30 . comparison In Example 2, the flexible angle is unable to counter rotate in the manner shown in FIG.

[0069] [Table 1]

[0070] Based on the test results shown in Table 1, providing a bag 10 having a first flexible angle 120 and a second flexible angle 170 that allows the first outer portion 140 and the second inner portion 190 to rotate counter-rotatingly relative to the first inner portion 130 and the second outer portion 180, respectively, can perform more effectively under static and dynamic load tests than a bag 10 in which the first outer portion 140 and the second outer portion 190 are bonded to the first side panel 20 and the second side panel 30, respectively. comparison The bag 10 of Example 2 is expected to represent the performance of a simple construction of a bag 10 in which the closure 40 is simply a repositionable pressure-sensitive adhesive 150 engaging the first side panel 20 and the second side panel 30. In such a bag 10, when inverted in a closed position, the repositionable pressure-sensitive adhesive 150 is expected to be loaded primarily by peel forces. The bag 10 of Example 1 is believed to tend to be loaded primarily by shear forces.

[0071] Example 3 is a modification of Example 1. Example 3 differs from Example 1 in that the first flexible angle 120 is constructed from two layers of 50 mm wide 3M SCOTCH 3434 blue masking paper tape, mated and assembled with adhesive sides facing each other. The repositionable pressure sensitive adhesive 150 is a 25.4 mm wide section of exposed 3M SCOTCH 3434 blue masking tape, which is then engaged with the second inner section 190.

[0072] comparison Example 4 is a modification of Example 3. comparison Example 4 differs from Example 3 in that for the first flexible angle 120, the first outer portion 140 and the first inner portion 130 are attached together to the first side panel 20 by 25 mm wide double sided tape, TESA FIX 4970. Similarly, unlike Example 3 above, for the second flexible angle 170, the second inner portion 190 and the second outer portion 180 are attached together to the second side panel 30 by 25 mm wide double sided tape, TESA FIX 4970.

[0073] Example 3 and Comparative Example 4 is Example 3 and Comparative Example 4 repositionable pressure sensitive adhesive 150 is used in Examples 1 and Comparative Example For the 12.5 mm wide FASHION TAPE sold by HOLLYWOOD FASHION SECRETS used in 2, a 3M SCOTCH 3434 repositionable pressure sensitive adhesive 150 was used.

[0074] Example 3 and Comparative Example The results of static and dynamic load testing of Example 4 are shown below in Table 2. Example 3 is a bag having a similar general structure to that shown in Figure 4 in that a first flexible angle 120 and a second flexible angle 170 are provided such that the first outer portion 140 and the second inner portion 190 are capable of counter-rotating relative to the first inner portion 130 and the second outer portion 180, respectively. comparison Example 4 is a bag 10 with a first outer portion 140 adhered to the first side panel 20 and a second inner portion 190 adhered to the second side panel 30 . comparison In Example 4, the flexible angle is unable to counter rotate in the manner shown in FIG.

[0075] [Table 2]

[0076] Based on the test results shown in Table 1, providing a bag 10 having a first flexible angle 120 and a second flexible angle 170 that allows the first outer portion 140 and the second inner portion 190 to rotate counter-rotatingly relative to the first inner portion 130 and the second outer portion 180, respectively, can perform more effectively under static and dynamic load tests than a bag 10 in which the first outer portion 140 and the second outer portion 190 are bonded to the first side panel 20 and the second side panel 30, respectively. comparisonThe bag 10 of Example 4 is expected to represent the performance of a simple construction of the bag 10 in which the closure 40 is simply a repositionable pressure sensitive adhesive 150 engaging the first side panel 20 and the second side panel 30. In such a bag 10, when inverted in a closed position, the repositionable pressure sensitive adhesive 150 is expected to be loaded primarily by peel forces. The bag 10 of Example 3 is believed to tend to be loaded in shear by the repositionable pressure sensitive adhesive 150. The repositionable pressure sensitive adhesive 150 used in Example 3 performed relatively better than the repositionable pressure sensitive adhesive 150 used in Example 1 in terms of static load test time to opening measurement. comparison The repositionable pressure sensitive adhesive 150 used in Example 4 had a static load test time to release measurement and a dynamic load test measurement of: comparison It performed relatively better than the repositionable pressure sensitive adhesive 150 used in Example 2.

[0077] Bag contents The bag 10 can contain dry food. The dry food can be for animal consumption, including human consumption. The dry food can be, by way of non-limiting example, food pellets, grain products, ground grain products, hops, flours, chips, berries, dried fruits, dried fungi, legumes, coffee, sugar, corn products, tea, salt, spices, and the like. The bag 10 can contain a nonwoven web of water-soluble fibers loaded with a fibrous water-soluble product, such as a fabric care active, an oral care active, a hair care active, or a skin care or cleaning active, a hard surface care active, and the like. The bag 10 may contain, by way of non-limiting example, disposable absorbent articles, incontinence garments, bibs, diapers, sanitary napkins, panty liners, tampons, training pants, wipes, hand soaps, oral care devices, hair treatment products, skin treatment products, personal cleansing articles, orally administered products, fabric and laundry conditioning products, fabric or laundry care and / or detergent products, dishwashing products, cleaning products, hard surface cleaning products, oral care products, lozenges, topical or oral pain relievers, dietary supplements, vitamins, probiotics, nutritional fiber, nutritional minerals, pet food, razors, grooming devices, food for human consumption, food for livestock consumption, food for wild animal consumption, and the like.

[0078] The bag 10 can contain a liquid composition, a gel composition, a paste, a dispersion, a solid composition, or a plurality of articles 2. The liquid composition, the gel composition, the paste, the dispersion, the solid composition, or a plurality of articles 2 can be, as non-limiting examples, a detergent composition, a laundry fabric softener, a laundry fragrance additive, a laundry care additive. The liquid composition, the gel composition, the paste, the dispersion, the solid composition, or a plurality of articles 2 can be, as non-limiting examples, an automatic dishwashing detergent or a hard surface treatment composition. The solid composition can be, as non-limiting examples, a blown powder, a crystal, a coated crystal, a melt molded body, an extruded particle, a spheronized particle, a molded particle, a tablet, or the like. The solid composition can be, as non-limiting examples, free-flowing or compacted.

[0079] The article 2 can be a water-soluble unit dose article 2. The water-soluble unit dose article 2 can be a water-soluble pouch containing a unit dose of the composition in a volume sufficient to provide an end use benefit. The bag 10 can contain from about 1 to about 100 water-soluble unit dose articles 2.

[0080] The water-soluble unit dose article 2 can include at least one water-soluble film formed into a shape such that the unit dose article includes at least one internal compartment surrounded by the water-soluble film. The at least one compartment can include a detergent composition. The water-soluble film can be sealed to prevent the detergent composition from leaking out of the compartment during storage. When the water-soluble unit dose article is added to water, the water-soluble film can dissolve and release the contents of the internal compartment into the wash liquor. The detergent composition can be a liquid or a solid.

[0081] The unit dose article 2 may include more than one compartment, or even at least two compartments, or even at least three compartments, or even at least four compartments, or even at least five compartments. The compartments may be arranged in an overlapping orientation, i.e., one on top of the other. Alternatively, the compartments may be arranged in a side-by-side orientation, i.e., one adjacent to the other. The compartments may even be oriented in a "tire and rim" arrangement, i.e., a first compartment is next to a second compartment, but the first compartment at least partially surrounds the second compartment, but does not completely surround the second compartment. Alternatively, one compartment may be completely enclosed within another compartment.

[0082] Each individual unit dose article 2 may have a weight of from 10 g to 40 g, or even from 15 g to 35 g.

[0083] The water-soluble film of the unit dose article 2 may be soluble or dispersible in water. The water-soluble film may have a thickness of 20 to 150 microns before being formed into the unit dose article 2.

[0084] The film material can be a polymeric material. The film material can be obtained, for example, by casting, blow molding, extrusion or blow extrusion of a polymeric material. The water-soluble film can comprise a polyvinyl alcohol homopolymer or a polyvinyl alcohol copolymer, optionally a blend of polyvinyl alcohol polymers and / or polyvinyl alcohol copolymers, optionally the polyvinyl alcohol copolymer being selected from sulfonated and carboxylated anionic polyvinyl alcohol copolymers, optionally a carboxylated anionic polyvinyl alcohol copolymer, optionally a blend of polyvinyl alcohol homopolymer and carboxylated anionic polyvinyl alcohol copolymer or a blend of polyvinyl alcohol homopolymers. Optionally, the water-soluble film may comprise a polymer, which may comprise a homopolymer, copolymer, or mixture selected from polyvinyl alcohol, polyvinylpyrrolidone, polyalkylene oxide, acrylamide, acrylic acid, cellulose, cellulose ethers, cellulose esters, cellulose amides, polyvinyl acetates, polycarboxylic acids and salts, polyamino acids or peptides, polyamides, polyacrylamides, maleic acid / acrylic acid copolymers, starch and gelatin, polysaccharides including xanthum, carragum, or mixtures thereof, optionally a polyvinyl alcohol homopolymer, and / or an anionic polyvinyl alcohol copolymer, in particular a carboxylated anionic polyvinyl alcohol copolymer, optionally selected from sulfonated and carboxylated anionic polyvinyl alcohol copolymers. The film may be supplied by Monosol (Merrillville, Indiana, United States of America), a division of Kuraray, under product references M8630, M8900, M8779, M8310. The film may be opaque, transparent or translucent. The film may comprise printed areas. Printed areas may be obtained using standard techniques such as flexographic or inkjet printing. The film may comprise an aversive agent, for example a bitter agent.Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof. Any suitable concentration of aversive agent may be used in the film. Suitable levels include, but are not limited to, 1-5000 ppm.

[0085] The water-soluble film or the water-soluble unit dose article 2 or both may be coated with a lubricant. Optionally, the lubricant can be selected from talc, zinc oxide, silica, siloxane, zeolite, silicic acid, alumina, sodium sulfate, potassium sulfate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starch, clay, kaolin, gypsum, cyclodextrin, or mixtures thereof.

[0086] Optionally, the detergent composition is a perfumed detergent composition. The perfumed detergent composition comprises a perfume added to the detergent composition. By non-encapsulated perfume, it is meant herein that the perfume compound is added directly to the detergent composition and is not present on a capsule or on a carrier material. The composition may also comprise a secondary perfume source, such as perfume capsules and / or pro-perfume, e.g., perfume bound to a carrier material technology. The non-encapsulated perfume can be incorporated into a liquid laundry detergent composition provided in a water-soluble unit dose article. The detergent composition may comprise 0.01-10% of the non-encapsulated perfume. In addition to the non-encapsulated perfume, the detergent composition may comprise an encapsulated perfume or pro-perfume technology, or a mixture thereof.

[0087] The laundry detergent composition may include a non-soap surfactant, which includes an anionic non-soap surfactant and a non-ionic surfactant. The laundry detergent composition may include 10% to 60% by weight of the laundry detergent composition of the non-soap surfactant. The weight ratio of the non-soap anionic surfactant to the non-ionic surfactant may be 1:1 to 20:1. The non-soap anionic surfactant may include a linear alkyl benzene sulfonate, an alkyl sulfate, or a mixture thereof. The weight ratio of the linear alkyl benzene sulfonate to the alkyl sulfate may be 1:2 to 9:1. Exemplary linear alkyl benzene sulfonates include C 10 ~C 16 Alkylbenzene sulfonic acid or C 11 ~C 14 It is an alkylbenzenesulfonic acid. "Linear" means herein that the alkyl group is linear. The alkyl sulfate anionic surfactant may comprise an alkoxylated alkyl sulfate, or a non-alkoxylated alkyl sulfate, or a mixture thereof. The alkoxylated alkyl sulfate anionic surfactant is optionally an ethoxylated alkyl sulfate anionic surfactant. The alkyl sulfate anionic surfactant may comprise an ethoxylated alkyl sulfate anionic surfactant, optionally having a molar average degree of ethoxylation of 1 to 5. The alkyl sulfate anionic surfactant may comprise a non-ethoxylated alkyl sulfate and an ethoxylated alkyl sulfate, the molar average degree of ethoxylation of the alkyl sulfate anionic surfactant being 1 to 5. The alkyl fraction of the alkyl sulfate anionic surfactant may optionally be derived from a fatty alcohol, an oxo synthetic alcohol, a Guerbet alcohol, or a mixture thereof. Optionally, the non-ionic surfactant may be selected from alcohol alkoxylates, oxo-synthetic alcohol alkoxylates, Guerbet alcohol alkoxylates, alkylphenol alcohol alkoxylates, or mixtures thereof.

[0088] The laundry detergent composition may comprise from 0.01% to 10% of non-surfactants by weight of the liquid laundry detergent composition.

[0089] Optionally, the laundry detergent composition may comprise from 1.5% to 20%, by weight of the laundry detergent composition, of a soap, optionally a fatty acid salt, optionally an amine neutralized fatty acid salt, optionally where the amine is an alkanolamine selected from monoethanolamine, diethanolamine, triethanolamine or optionally mixtures thereof, further optionally where the amine is monoethanolamine.

[0090] Optionally, the laundry detergent composition is a liquid laundry detergent composition, and optionally the liquid laundry detergent composition comprises less than 15% water by weight of the liquid laundry detergent composition.

[0091] Optionally, the laundry detergent composition is a liquid laundry detergent composition which may comprise a non-aqueous solvent selected from 1,2-propanediol, dipropylene glycol, tripropylene glycol, glycerol, sorbitol, polyethylene glycol, or mixtures thereof. Optionally, the liquid laundry detergent composition may comprise from 10% to 40% of the non-aqueous solvent by weight of the liquid laundry detergent composition.

[0092] Optionally, the laundry detergent composition comprises adjunct ingredients selected from enzymes, citrates, bleaches, bleach catalysts, dyes, hueing dyes, brighteners, cleaning polymers including alkoxylated polyamines and polyethyleneimines, soil release polymers, surfactants, solvents, dye transfer inhibitors, chelating agents, encapsulated fragrances, polycarboxylates, structurants, pH adjusters, and builders including mixtures thereof.

[0093] Optionally, the liquid laundry detergent composition has a pH of 6 to 10, the pH of the liquid laundry detergent composition being measured as a 10% product concentration in demineralized water at 20° C. If liquid, the laundry detergent composition may be Newtonian or non-Newtonian. Optionally, the liquid laundry detergent composition is non-Newtonian.

[0094] combination An example is given below. A. A bag (10), a first side panel (20) having a pair of first side panel lateral edges (70) and a first side panel inwardly facing surface (80); a second side panel (30) opposite the first side panel and having a second side panel inward surface (90) opposite the first side panel inward surface, the second side panel being connected to the first side panel across a bottom (60) of the bag, the second side panel having a pair of second side panel lateral edges (100), each of the first side panel lateral edges being joined to an opposing second side panel lateral edge; a closure (40) opposite the base and extending along a longitudinal axis (L), the closure releasably connecting the first side panel and the second side panel, the closure, a portion of the first side panel inwardly facing surface, a portion of the second side panel inwardly facing surface, and the base defining an interior volume (50); The closure is: a first flexible angle (120) extending along the longitudinal axis, the first flexible angle including a first inner portion (130) joined to the first side panel inside the interior volume and a first outer portion (140) extending from the first inner portion to an exterior of the interior volume; a repositionable pressure sensitive adhesive (150) directly or indirectly releasably engaging said first outer portion to said second side panel inwardly facing surface; a free flange (160) extending from said first outer portion along at least a portion of said longitudinal axis, said free flange being free of repositionable pressure sensitive adhesive; The bag, wherein the first side panel and the second side panel are greater than about 80% by weight paper. B. The bag of paragraph A, wherein the closure has a closure length along the longitudinal axis and the free flange has a free flange length along the longitudinal axis, the free flange length being less than about 20% of the closure length. C. The bag of paragraph A or B, wherein at least a portion of the free flange has a contrasting color with the first outer portion. D. The bag of any of paragraphs A-C, wherein the second side panel is continuous with the first side panel across the bottom of the bag. E. The bag of any of paragraphs A-L, wherein greater than about 80% by weight is paper. F. The bag of any of paragraphs A-E, wherein the first side panel inwardly facing surface and the second side panel inwardly facing surface are coated with a polymeric coating. G. The bag of paragraph F, wherein the polymeric coating comprises at least one material selected from low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, polyacrylamide, linear polyacrylamide, styrene butadiene copolymer, and combinations thereof. H. The bag of any of paragraphs A-G, wherein the first side panel has a first side panel outwardly facing surface (82) opposite the first side panel inwardly facing surface and the second side panel has a second side panel outwardly facing surface (92) opposite the second side panel inwardly facing surface, and the first side panel outwardly facing surface and the second side panel outwardly facing surface are discontinuously coated or uncoated. I. The bag of any of paragraphs A-H, wherein the repositionable pressure sensitive adhesive comprises at least one material selected from homopolymers or copolymers of acrylic and methacrylic acid esters, butyl rubber based systems, silicones, nitriles, styrene block copolymers, ethylene vinyl acetate, urethanes, vinyl esters and amides, olefin copolymer materials, natural or synthetic rubbers, and mixtures thereof. J. The bag of any one of paragraphs A-I, wherein the first side panel and the second side panel each have an upper edge (11) outside the interior volume and the free flange is recessed relative to the upper edges. K. The bag of any of paragraphs A-J, wherein the repositionable pressure sensitive adhesive has a load at break according to ASTM D3165-07(2014) of about 0.05 to about 0.5 MPa and an average T-peel strength according to ASTM D903-98(2017) of about 0.01 to about 0.6 N / mm. L. The bag of any of paragraphs A-K, wherein the bag contains a plurality of water soluble unit dose articles. M. The bag of any of paragraphs A-L, wherein the repositionable pressure sensitive adhesive has a closure height measured in a direction perpendicular to the longitudinal axis, the closure height being from about 1 mm to about 50 mm. N. The bag of paragraph A, further comprising a second flexible angle (170) extending along the longitudinal axis, the second flexible angle comprising a second outer portion (180) joined to the second side panel inwardly facing surface outside of the interior volume and a second inner portion (190) extending from the second outer portion into the interior of the interior volume, the repositionable pressure sensitive adhesive releasably engaging the first outer portion with the second inner portion thereby indirectly releasably engaging the first outer portion with the second side panel inwardly facing surface via the second inner portion, the second inner portion having a second inner portion distal end directed toward the interior volume. O. The bag of paragraph N, wherein the repositionable pressure-sensitive adhesive is on at least one surface selected from a surface of the first outer portion facing toward the second inner portion, a surface of the second inner portion facing toward the first outer portion, and combinations thereof. P. The bag of paragraphs N or O, wherein the first flexible angle and the second flexible angle are greater than about 80% by weight paper. Q. the first flexible angle and the second flexible angle each have an outwardly facing surface (220) that are oriented away from one another, and the first side panel inwardly facing surface, the second side panel inwardly facing surface, and at least a portion of each of the outwardly facing surfaces are coated or partially coated with a polymeric coating (225); The bag of any of paragraphs N-P, wherein the outward facing surface of the first flexible angle is joined to the inward facing surface of the first side panel by a heat seal (230) of the polymer coating and the outward facing surface of the second flexible angle is joined to the inward facing surface of the second side panel by a heat seal of the polymer coating. R. The bag of any of paragraphs N-Q, wherein the first outer portion is releasably engaged to the second inner portion by the repositionable pressure sensitive adhesive across a peel zone (152) having a peel area, the bag contains a cumulative weight of articles (2), and the repositionable pressure sensitive adhesive has a load at break in accordance with ASTM D3165-07(2014), and the product of the load at break in accordance with ASTM D3165-07(2014) multiplied by the peel area is from about 2 to about 500 times, optionally from about 5 to about 300 times, and optionally from about 5 to about 100 times greater than the cumulative weight of the articles. S. the first outer portion is releasably engaged with the second inner portion by the repositionable pressure sensitive adhesive across a peel zone (152) having a peel area, the bag containing a cumulative weight of articles (2), the peel area and the mass of the articles being approximately 125 mm per 100 g. 2 ~Approx. 1250mm per 100g 2 The bag of any of paragraphs N-R, wherein the ratio is given by: T. The bag of any of paragraphs N-S, wherein the repositionable pressure sensitive adhesive has a closure height measured in a direction perpendicular to the longitudinal axis, the closure height being from about 1 mm to about 50 mm. U. A method for opening a bag according to any one of paragraphs N to T, gripping the second side panel with one hand at a top edge (11) of the second side panel opposite the bottom and outside the interior volume; grasping the free flange with the other hand; opening the bag by peeling the free flange and the second side panel from one another to peel the first outer portion from the second inner portion along the repositionable pressure sensitive adhesive; and optionally reengaging the first outer portion and the second inner portion along the repositionable pressure sensitive adhesive to close the bag. V. A method for opening a bag according to any one of paragraphs A to M, gripping the second side panel with one hand at a top edge (11) of the second side panel opposite the bottom and outside the interior volume; grasping the free flange with the other hand; peeling the free flange from the second side panel along the repositionable pressure sensitive adhesive to open the bag; and optionally reengaging the first outer portion and the second side panel along the repositionable pressure sensitive adhesive to close the bag.

[0095] Dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

Claims

1. A bag (10), a first side panel (20) having a pair of first side panel lateral edges (70) and a first side panel inwardly facing surface (80); a second side panel (30) opposite the first side panel and having a second side panel inward surface (90) opposite the first side panel inward surface, the second side panel being connected to the first side panel across a bottom (60) of the bag, the second side panel having a pair of second side panel lateral edges (100), each of the first side panel lateral edges being joined to an opposing second side panel lateral edge; a closure (40) opposite the base and extending along a longitudinal axis (L), the closure releasably connecting the first side panel and the second side panel, the closure, a portion of the first side panel inwardly facing surface, a portion of the second side panel inwardly facing surface, and the base defining an interior volume (50); The closure comprises: a first flexible angle (120) extending along the longitudinal axis, the first flexible angle including a first inner portion (130) joined to the first side panel inside the interior volume and a first outer portion (140) extending from the first inner portion to an exterior of the interior volume; a repositionable pressure sensitive adhesive (150) directly or indirectly releasably engaging said first outer portion to said second side panel inwardly facing surface; a free flange (160) extending from the first outer portion along at least a portion of the longitudinal axis, the free flange being free of a repositionable pressure sensitive adhesive; The bag, wherein the first side panel and the second side panel are greater than 80% by weight paper.

2. 2. The bag of claim 1, wherein the closure has a closure length along the longitudinal axis and the free flange has a free flange length along the longitudinal axis, the free flange length being less than 20% of the closure length.

3. 3. The bag of claim 1 or 2, wherein at least a portion of the free flange has a contrasting color with the first outer portion.

4. 2. The bag of claim 1, wherein the second side panel is continuous with the first side panel across the bottom of the bag.

5. 10. The bag of claim 1, wherein greater than 80% by weight of the bag is paper.

6. 10. The bag of claim 1, wherein the first side panel inwardly facing surface and the second side panel inwardly facing surface are coated with a polymeric coating.

7. 10. The bag of claim 1, wherein the repositionable pressure sensitive adhesive comprises at least one material selected from acrylic and methacrylic acid ester homopolymers or copolymers, butyl rubber based systems, silicones, nitriles, styrene block copolymers, ethylene vinyl acetate, urethanes, vinyl esters and amides, olefin copolymer materials, natural or synthetic rubbers, and mixtures thereof.

8. 2. The bag of claim 1, wherein the first and second side panels each have an upper edge (11) outside the interior volume, and the free flange is recessed relative to the upper edges.

9. 10. The bag of claim 1, wherein the repositionable pressure sensitive adhesive has a load at break according to ASTM D3165-07(2014) of 0.05 to 0.5 MPa and an average T-peel strength according to ASTM D903-98(2017) of 0.01 to 0.6 N / mm.

10. 2. The bag of claim 1, further comprising a second flexible angle (170) extending along the longitudinal axis, the second flexible angle comprising a second outer portion (180) joined to the second side panel inwardly facing surface outside the interior volume and a second inner portion (190) extending from the second outer portion to the interior of the interior volume, the repositionable pressure sensitive adhesive releasably engaging the first outer portion with the second inner portion thereby indirectly releasably engaging the first outer portion with the second side panel inwardly facing surface via the second inner portion, the second inner portion having a second inner portion distal end directed toward the interior volume.

11. 11. The bag of claim 10, wherein the repositionable pressure sensitive adhesive is on at least one surface selected from a surface of the first outer portion facing the second inner portion, a surface of the second inner portion facing the first outer portion, and combinations thereof.

12. 12. The bag of claim 10 or 11, wherein the first flexible angle and the second flexible angle are greater than 80% by weight paper.

13. the first flexible angle and the second flexible angle each have an outwardly facing surface (220), the outwardly facing surfaces being oriented away from one another, and the first side panel inwardly facing surface, the second side panel inwardly facing surface, and at least a portion of each of the outwardly facing surfaces are coated or partially coated with a polymeric coating (225); 11. The bag of claim 10, wherein the outward facing surface of the first flexible angle is joined to the inward facing surface of the first side panel by a heat seal (230) of the polymer coating and the outward facing surface of the second flexible angle is joined to the inward facing surface of the second side panel by a heat seal of the polymer coating.

14. 11. A method for opening the bag of claim 10, comprising the steps of: gripping the second side panel with one hand at a top edge (11) of the second side panel, the top edge being opposite the bottom and outside the interior volume; grasping the free flange with the other hand; opening the bag by peeling the free flange and the second side panel from one another to peel the first outer portion from the second inner portion along the repositionable pressure sensitive adhesive; A method comprising:

15. 10. A method for opening the bag of claim 1, comprising the steps of: gripping the second side panel with one hand at a top edge (11) of the second side panel, the top edge being opposite the bottom and outside the interior volume; grasping the free flange with the other hand; peeling the free flange from the second side panel along the repositionable pressure sensitive adhesive to open the bag; A method comprising:

Images