KR20140092893A - Re-closable pack with cohesive closure mechanism - Google Patents

Abstract

The present invention relates to a reclosable pack (1) having an engaging sealing mechanism. In particular, the invention relates to a resealable pack (1) having a sealing mechanism (14a, 14b) for consumables such as cigarettes.

Description

RE-CLOSABLE PACK WITH COHESIVE CLOSURE MECHANISM WITH COMBINED SEALING MACHINE

The present invention relates to a resealable pack having a cohesive closure mechanism. In particular, the present invention relates to a resealable pack having an engaging sealing mechanism for consumable items such as cigarettes.

Many examples of resealable packs are known for storing various consumables. One of them includes a hinged-lid pack including a locking tab mechanism. Others include packs including squeeze-openable mechanisms or slider zipper assemblies, pressure-sensitive adhesives.

Re-sealable lid packs are also known for storing cigarettes. The most commonly used cigarette pack relies on opening and closing the pack with a hinged lid and has no other means of retaining the pack in a closed configuration. However, there is an example of a cigarette pack having a resealable lid utilizing adhesive strips disclosed in EP 1837293 and US 6844435 for more securely opening the lid of the pack safely.

Even with the added adhesive strips, these packs may become unwantedly adhered to the cigarette product spilled on the adhesive strip during use and may lose the adhesive function. This tends to cause the lid to open at least partially when the user tries to keep the lid closed. This can cause the contents of the pack to depart from the pack in an undesirable manner as well as an aesthetically unpleasant pack.

WO 2007/093758 further discloses a cigarette package comprising engagement members used to adhere flaps to a lid. However, such engagement members have not been disclosed for use in a sealing mechanism.

Thus, there is a need for a resealable pack having an improved sealing mechanism for maintaining the closed form of the pack.

In order to solve the problems proposed by the prior art, the present invention provides a resealable pack having a sealing mechanism, wherein the sealing mechanism comprises two opposing mating surfaces.

The term face used herein is referred to as the surface of the resealable pack itself or a separate member which may be attached to the pack. In the following, the separated member may be referred to as a coupling member.

Here, bonding is referred to as a physical property or action in which characters are mutually adhered to each other. This is the intrinsic physical property of the material caused by the structure and morphology of these molecules, which creates an irregular arrangement of electrons orbiting the orbiting when the molecules are in close proximity to each other, creating an electrical attraction that can maintain the macroscopic structure. The bonding surface or member may be any material that has an electrostatic charge that is non-uniformly distributed on the surface, may be self-attached, or may be any other material having a complementary charge. The bonding surface or member may be itself or any material that can form intermolecular forces, such as Van der Waals attraction or dipole-dipole attraction, hydrogen bonding.

The cohesive face or member is consequently different from the adhesive face or member. The adhesive member needs a surface that is sufficiently adhered to be able to adhere to other members. While the coupling member has an irregular charge on the surface for attachment via complementary charging of the members.

The engagement surface or member may further comprise any material having sufficient cling. Here, "cling" refers to the function of a substance that can be attached to itself.

The average kinking value of the two mating surfaces or members may be at least 50 grams force per inch measured by ASTM D-5458-95, more preferably 50 and 500 per inch Gram, more preferably between 60 and 400 grams per inch, and more preferably between 80 and 200 grams per inch. If the cling value is less than 50 grams force per inch, the sealing mechanism may have insufficient coupling to provide an effective seal tightness, and conversely, if the 500 gram force per inch is exceeded, There is a difficult problem.

Suitable materials for the bonding surfaces or members include, but are not limited to, silicon, silicon-based materials, polyolefin blends, polyethylene (PE), low density polyethylene (LDPE), polyvinyl chloride (PVC), polyvinylidene chloride Polyethylene terephthalate (PET) and / or combinations thereof, and most preferably polyethylene terephthalate (PET).

For a bonded surface or member comprised of a material that does not have sufficient intrinsic kling properties, it may be necessary to include one or more tackifying agents to increase cling on the bonded surface.

Suitable pressure sensitive adhesives according to the present invention include, but are not limited to, polybutene, isotactic and adventitious polypropylene, hydrogenated resins and resin esters, hydrocarbon resins such as terpene resins, and / or combinations thereof. Preferably, the tackifier is polyisobutylene, a polyethylene-vinyl acetate (EVA) copolymer and / or combinations thereof.

The adhesive may be used in an amount sufficient to provide the required kelling properties. The pressure-sensitive adhesive may be used in an amount of 0.1 to 15% by weight, more preferably 0.5 to 10% by weight, more preferably 0.8 to 8% by weight, based on the total weight of the bonding surface or member. By weight, more preferably from 1 to 5% by weight. If the amount of tackifier is less than 0.1 wt.%, Based on the total weight of the bonding surface or member, the tacking surface or member may have insufficient killing properties to provide a seal tightness in an effective pack, Is used in excess of 15% by weight, based on the total weight of the joining face or member, too much cling or adhesion properties may appear on the joining face or member.

The bonding surface or member may have a surface roughness value between 0.5 and 4 nm, more preferably between 0.5 and 3 nm, more preferably between 0.5 and 2 nm, more preferably between 0.5 and 1 nm . The surface roughness value can be measured by a person having ordinary skill in the art by any method. In a preferred embodiment, the surface roughness value is measured with an atomic force microscope (AFM). If the joining surface or member has a surface roughness value of less than 0.5 nm, the sealing mechanism will be too difficult for the user to easily open and close the pack, and if the surface roughness value exceeds 4 nm, the joining surface or member will operate an effective sealing mechanism But does not provide sufficient coupling to do so.

The bonding surface or member may further comprise a glossy coating or may itself exhibit a gloss. The engagement member may have a gloss value at 45 ° of at least 40%, 50%, 60%, 63%, 65%, 70%, 75%, 80%, 85%, 90%, and 95% D-2457.

Preferably, the surface interaction between the bonding surfaces or members is at least 40%, preferably between 40 and 100%, more preferably between 50 and 99%, more preferably between 60 and 98% Is between 70 and 95%. Here, the surface area interaction refers to the ratio of the surface area overlapping between at least two opposing bonding surfaces or members. If the surface area interaction of the mating surfaces or members is less than 40%, the overlap between the surface and the members may be insufficient to provide an effective sealing mechanism.

The resealable pack may be formed of any material known in the art. Such material may represent a bond, and consequently the resealable pack may itself comprise a face that can provide an essentially effective sealing mechanism. In this case, one of the mating surfaces that face each other may be treated to provide a complementary charge surface to the other mating surface to provide an effective sealing mechanism. In this case, one of the coupling surfaces may provide the requisite charge distribution by any means well known in the art to provide the required complementary charge. In a preferred embodiment, complementary charge is generated by a plasma etch technique Or by applying a coating.

The resealable pack further comprises a separate mating member to provide an effective sealing mechanism. The coupling member can provide the necessary complementary charge required to provide an effective sealing mechanism.

In a preferred embodiment, the resealable pack is made of cardboard. In this case, the resealable pack may require two or more engagement members. In a more preferred embodiment, the resealable pack is a cigarette pack.

The resealable pack comprises two or more engagement members (see above), and each engagement member may be made of the same or another material. If the joining members are made of the same or different materials, each joining member can exhibit different physical properties. One joining member may exhibit a higher gloss value than the other. One coupling member may exhibit a higher clipping value than the other. One joining member may comprise a greater amount of tackifier than the other.

Each engaging member can have a thickness between 10 microns and 1500 microns, and can be between 10 microns and 1000 microns, more preferably between 10 microns and 500 microns, and more preferably between 20 microns and 250 microns have.

The sealing mechanism may comprise one continuous strip of engagement members or may comprise two or more small strips of engagement members to provide an effective seal.

The joining members may be provided on the reel of the non-sticky paper backing and are delivered and applied in separate resealable packs. The backing can be pulled and rewound.

The resealable pack according to the present invention has a novel sealing mechanism that allows for maintaining positive engagement on the hermetic surface and is usable over the long term compared to conventional sealing mechanisms using coatings or adhesive strips. Moreover, rather than bonding, bonding is used in the sealing mechanism and there are no problems such as fingerprints or dust, unwanted adhesion of detached tobaccos.

The present invention can also provide a blank for making the reclosable pack.

Specific embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a resealable pack with a lid open according to the present invention;
2 is a perspective view of a resealable pack with a lid closed according to the present invention.
Figure 3 shows a two-part blank for forming a resealable pack according to the present invention.
Figure 4 is a perspective view of various embodiments of a resealable pack with a lid open according to the present invention.
Fig. 5 shows a two-part blank for forming the reclosable pack shown in Fig.

Figure 1 shows a resealable pack 1 comprising a lid 12 and a body 11. The body 11 includes a plurality of side walls 110, 111 and 114, a lower end wall 112 (not shown) and an open top end 113. The lid 12 is provided to close the open top end 113 of the body 11. The lid 12 includes a lid front wall 121 on the side of the lid which is substantially opposite the lid hinge 13 connected to the lid on the rear wall 114 of the body 11. The lid further includes a lead side wall (122). The lead-through wall 123 is not essential and the lead hinge 13 may optionally be formed directly between the top wall 124 of the lid and the back wall 114 of the pack. A plurality of intermediate sidewalls 111 can be processed between the rear wall 114 and the front wall 110 of the pack to create the desired shape of the pack. By way of example, and as an alternative to the one shown in FIG. 1, a pair of opposed intermediate sidewalls 111 provides a pack formed in a regular box-shape, and a plurality of intermediate sidewalls 111 extend from a lower wall 112 thereof Or is provided to give a substantially oval-shaped pack when viewed from the open top end 113 of the body 11. A plurality of other intermediate side walls 111 may be provided for the external shape of the appropriate box. Front side wall 110 is substantially opposite rear side wall 114, but need not be exactly opposite or parallel.

The first engaging member 14a is attached to the inside of the lid front wall 121. The second engaging member 14b is attached to the front side wall of the inner frame 11a.

The front side wall of the inner frame 11a is positioned substantially opposite the rear side wall 114 of the pack. The front side wall of the inner frame 11a is positioned so that the second engaging member 14b can be engaged with the first engaging member located inside the lid front wall 121. [

FIG. 2 is similar to FIG. 1 but shows a closed lid. According to the illustrated arrangement of Figures 1 and 2, the second engagement member 14b is attached to the front wall of the inner frame 11a. The inner frame 11a is optional and the second engagement member 14b is attached directly to the front side wall 11 if desired. In Fig. 2, the inner frame 11a and the first and second engaging members 14a and 14b overlap each other, and are distinguished from the thick side wall 11 and the lid front wall 121 by dash lines. The circle 20a represents the attachment of the gluing point at which the inner frame 11a can be attached to the front wall 110. [ The circle 20b shows the attachments of gluing points where the first and second engagement members 14a and 14b are respectively attached to the front wall 121 of the top wall and the front wall of the inner frame 11a.

In this embodiment, all or one of the members 14a, 14b are available from Gottlieb Binder GmbH & Can be made of pieces of GeckoO-Nanoplast® material sold and manufactured by KG, Holzgerlingen, Germany. This material is a silicon-based material with a thousand microscopic structures of grinding elements per square centimeter, and exhibits high adhesion properties using a " half-de-ball force " force pulling on a substantially flat surface.

Such an engaging member of the GeckoO-Nanoplast (R) material can adhere well to the inner frame of the pack, especially if there is no other adhesive directly on the lid surface or inner frame to which the engaging member 14 is attached.

Alternatively, according to Fig. 4, the resealable pack 1 may comprise only one engagement member 14b. According to an embodiment comprising one engagement member 14b, this is achieved by Gottlieb Binder GmbH & It is desirable to be made of a piece of Gecko®-Nanoplast® material sold and manufactured by KG, Holzgerlingen, Germany.

Preferably, the engaging member 14b is attached to the front face of the inner frame 11a and is punched with a label (not shown) that can be peeled off before use / opening of the pack. This peelable label prevents the lid of the pack from being strongly attached to the engagement member 14b when the pack is first opened by the user. It also allows the user to choose whether to use the reclosing function. The user can leave the peelable label on the engagement member 14b so that it can be peeled off the protective label and activates the engagement member and is left with a pack with a common lid if desired.

Preferably, the engaging member 14b made of Gecko (R) - Nanoplast (R) is attached on the inner frame 11a together with the glue, for example, before the latter is self-attached to the inner surface of the front wall of the pack in the manufacturing process . Preferably, the inner frame may be provided from a reel and each is provided in a cut or stack, and the inner frame 11a, which will be described later, is engaged with the engaging member 14b at a determined position before being associated with the blank used to form the pack. Labeled " with < / RTI >

Figures 3 and 5 show a two-part blank for forming a resealable pack according to the present invention shown in Figures 1 and 4, respectively. The blank includes a first portion 71 for forming the body of the pack, a second portion 72 for forming a lid of the pack, and the embodiment includes another blank 73 forming the inner frame of the pack . As previously mentioned, the inner frame is optional and, if the inner frame is not required, the second coupling member is on the front side wall 110 of the pack 1 by reproduction on the upper edge 710a of the front panel 710 Directly attached. The pack blank includes a front sidewall panel 710, which has an intermediate sidewall panel 711 on each side and is connected by a line that folds to the front sidewall panel. At the lower edge, the front side wall panel 710 is connected to the lower wall panel 712 by a folding line. The lower wall panel 712 is connected to the rear wall panel 714 by a folding line. The rear wall panel 714 is connected to the respective side wall tabs 713 by a folding line, which is connected to the lower wall tabs 712a by a folding line. To form the main body of the pack, the front sidewall panel 710 and the rear sidewall panel 714 are folded together with the lower panel 712 about their respective fold lines. The lower wall tabs 712a are folded at a folding line connected thereto by 90 [deg.]. The side wall tabs 713 are folded at 90 degrees with respect to their folding lines with the rear side panels 714 and the bottom wall tabs 712a are based on the inner wall panel 712 on the inside of the pack. The front wall panel 710 is folded to form the front side wall of the pack and the connected side wall panels 711 are folded at an angle of 90 DEG on the outside of the side wall tabs 713 with respect to their connected fold lines. The side wall panel 711 can be fixed to the side wall tabs 713 and maintains the formation of the pack body.

The second portion 72 of the blank forms the lid 12 of the pack. The lid portion includes a lid front wall panel 721 and includes a pair of lid side wall panels 722 abutting each other, a lid rear wall panel 723 and a lid upper wall panel 724. The lid rear wall panel 723 is connected to the lid side wall tab 722a by a folding line, which is connected to the lid upper wall tab 724b. To form the lid, the lid upper wall tabs are folded at 90 [deg.] Relative to their associated fold lines with the lid side wall tabs 722b. As a result, the lid side wall tabs 722a are folded at 90 [deg.] With respect to their connected fold lines along with the lid rear wall panel 723. [ The lid upper wall panel 724 may be folded about the folded line of the lid with the lid rear wall panel 723 to form the upper wall of the pack 1.

The lid front wall panel 721 can be folded about their associated fold lines with the lid top panel 724 to form the front wall of the lid. The lid side wall panel 722 is fixed to the side wall tab 722a to fold it at 90 占 and form a lid structure. Tab 726 is provided and is provided with a first engagement member 14a that is connected to the lid front wall panel 721 through a folding line and that is suitably formed to engage the second engagement member. The tab 726 may be folded substantially 180 ° about the folded line of the lid front wall 121 of the pack 1 with the lid front wall panel 721 connected thereto to provide a first mating member.

The second blank 73 can be provided in the inner frame if necessary. The blank includes an inner frame front wall panel 731 connected by a folding line to the inner frame side wall panel 732. The inner frame side wall panel 732 includes a folding line 733. These folding lines allow a portion of the slightly angled inner frame towards the interior of the pack. This helps catch the product inside the pack. In particular, the product is a cigarette and helps to pick up cigarettes from tight packs inside the pack. The second engaging member 14b is provided in the inner frame if the inner frame is required. As described above, if the inner frame is not required, the second engagement member is attached to the front side wall panel 710.

The dash line 734 shows the line of the inner frame facing the upper edge 710a of the blank 71 when the pack is assembled. With regard to what exactly the inner frame should be attached to the main body blank 71, an inaccurate degree is usually present in the manufacturing process. Consequently, it is an advantage that the first engagement member engages the second engagement member and does not care about the exact position of the inner frame on the outer pack blank. The tolerance for placement of the inner frame relative to the outer pack may be 0.5 mm + or -.

Claims (15)

A resealable pack having a sealing mechanism comprising two mating surfaces (14a, 14b).
The reclosable pack of claim 1, wherein at least one of said mating surfaces that are mutually opposed to each other is a mating member.
3. A method according to claim 1 or 2, wherein the bonding surface or member is selected from the group consisting of silicon, a silicon-based material, a polyolefin blend, polyethylene (PE), low density polyethylene (LDPE), polyvinyl chloride (PVC), polyvinylidene chloride ), Polyethylene terephthalate (PET), and / or combinations thereof.
The reclosable pack of any of the preceding claims, wherein the mating surface or member further comprises one or more tackifiers.
5. The method of claim 4, wherein the pressure sensitive adhesive is selected from the group consisting of polybutene, isotactic and atactic polypropylene, hydrogenated resins and hydrocarbon resins such as resin esters, terpene resins, and / or combinations thereof. Sealable pack.
6. The reclosable pack of claim 4 or 5, wherein the adhesive can have an amount of from 0.1 to 15% by weight, based on the total weight of the mating surface or member.
The reclosable pack of any one of claims 2 to 6, wherein the engaging member has a thickness between 10 microns and 1500 microns.
The reclosable pack of any of the preceding claims, wherein the mating surface or member has a surface roughness value between 0.5 and 4 nm.
The reclosable pack of any of the preceding claims, wherein the surface area interaction between the corresponding mating surfaces or members is at least 40%.
The reclosable pack of any of the preceding claims, wherein the pack is made from a card.
11. The reclosable pack of claim 10, wherein the pack is a cigarette pack.
The reclosable pack of any of the preceding claims, wherein the pack further comprises a hinged lid (12) having one of the engagement members (14a) within the lid.
13. The reclosable pack of claim 12, wherein the engagement members exhibit different cling and / or gloss values.
A set of blank or blankes for forming a pack of any one of claims 1 to 13.
14. A method of forming a pack according to any one of claims 1 to 13 by folding the blank or blanks of claim 14.

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