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(11) | EP 1 826 141 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
Multi-layered packaging film and packaging bag Mehrlagige Verpackungsfolie und Verpackungsbeutel Pellicule feuilletée d'emballage et sac d'emballage |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] The present invention relates to a multi-layered packaging material, a packaging bag, and a package and a packaging method using the multi-layered packaging material and the packaging bag.
[0002] GB 800 513 discloses a package for a gramophone record comprising a paper envelope with a heat sealable plastic inner layer.
[0004] Generally, products, such as household appliances, office machines, furniture, and precision machinery and tools, are packaged with a packaging box, etc. so as to prevent them from being scratched or damaged during storage and delivery. In this case, to protect the products from impacts, as well as from moisture, dust, mold, etc., the products are wrapped with a packaging film such as a polyethylene film, fixed into a cushion member such as a resin foam and then inserted into the packaging box.
[0005] However, even though the products are packaged as above, there may arise a problem that a friction is produced between the product and the packaging film so as to peel away a paint or coating layer from the product.
[0006] Recently, electronic appliances, such as air conditioners, handsets, notebooks, refrigerators, etc., are being designed with more attention to aesthetic details. As there is no difference in function or performance between the same kinds of electronic appliances, there is growing recognition that the electronic appliances are being treated as furniture, and consumers prefer an electronic appliance with a smart design and a fashionable color above other electronic appliances.
[0007] Accordingly, electronic appliances, which not only have more various and luxurious colors and patterns, but also present an ornamental value,, are coming out on the market.
[0008] To present such a fashionable atmosphere, the electronic appliances are usually coated with high glossy colors, e.g., high glossy black colors, which bring up the image of a piano coating and feel as if it is a luxurious crystal in a bright place.
[0009] However, the electronic appliances coated with the high glossy colors as above are easily scratched even by a small impact and the scratched portion is easily noticeable, as compared with a general electronic appliances, which are not coated with high glossy colors. Accordingly, it is very important for the packaging material, such as a packaging film, to protect the electronic appliances.
[0010] To prevent the electronic appliances from being scratched, there has been used a method that a protecting film is attached on outer surfaces of the electronic appliances to protect them. However, since the work of attaching the protecting film is troublesome and inefficient, productivity may be reduced. Further, since material cost of the protecting film is expensive, manufacturing costs may be increased. Also, bubbles may be produced in or on the outer surfaces of the electronic appliances on which the protecting film is attached, so that a quality in the exterior of the electronic appliances is deteriorated.
[0011] The multi-layered packaging material of the invention is characterized by the features of claim 1, the packaging bag of the invention is characterized by the features of claim 6; the package of the invention is characterized by the features of claim 9; and the packaging method of the invention is characterized by the features of claim 10.
[0012] Illustrative, non-limiting exemplary embodiments of the present invention address at least the above problems and/or disadvantages and provide at least the advantages described below. Accordingly, the present invention provides a multi-layered packaging film that can prevent products from being scratched during packaging and delivery.
[0013] The present invention further provides a packaging bag that can prevent the products from being scratched during packaging and delivery,a package using the multi-layered packaging film and the packaging bag described above, anda packaging method using the multi-layered packaging film and the packaging bag described above.
[0014] According to one aspect of an exemplary embodiment of the present invention, there is provided a packaging bag comprising at least two multi-layered sections adjacent with each other. Each of the at least two multi-layered sections comprise an outer film, and an inner film layered inside the outer film to contact an object to be packaged. The outer film is movable with respect to the inner film, and has a coefficient of friction different from that of the inner film.
[0015] The outer film may be formed of a material, e.g., a high-density polyethylene (HDPE), having a small coefficient of friction, and the inner film may be formed of a material, e.g., a low-density polyethylene (LDPE), having a large coefficient of friction.
[0016] Each of the at least two multi-layered sections further comprises a subsidiary film layered between the outer and the inner film. The subsidiary film is formed of a material having a coefficient of friction smaller than that of the inner film.
[0018] The packaging bag may be beneficially used for an object that has a surface polished at a high level.
[0019] The at least two multi-layered sections at at least one edge thereof may be joined with each other. Preferably, the at least two multi-layered sections may form a pocket, in such a manner that the at least two multi-layered sections at three edges thereof are joined with each other and at one edge thereof are separated from each other.
[0020] According to still another aspect of an exemplary embodiment of the present invention, there is provided a package according to claim 9.
[0021] The outer film may be formed of a high-density polyethylene (HDPE), and the inner film may be formed of a low-density polyethylene (LDPE).
[0022] The packaging material further comprises a subsidiary film layered outside the inner film. The subsidiary film is formed of a material having a coefficient of friction smaller than that of the inner film.
[0024] The package may be beneficially used for an object that has a surface polished at a high level.
[0025] According to also another aspect of an exemplary embodiment of the present invention, there is provided a packaging method according to claim 10.
[0026] Other objects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] These and/or other aspects and advantages of the present invention will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view illustrating a packaging material (i.e., a packaging bag) in accordance with an exemplary embodiment of the present invention;
FIG.2 is a cross section view taken along line II-II of FIG. 1;
FIG. 3 is a schematic cross section view illustrating a package in which the packaging bag in accordance with the exemplary embodiment of the present invention is applied; and
FIG. 4 is a magnified view of a portion A of FIG.1
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0028] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The exemplary embodiments are described below in order to explain the present invention by referring to the figures.
[0029] Referring to FIGS. 1 and 2, there is illustrated a packaging material 1 to package an object 3 in accordance with an exemplary embodiment of the present invention. The packaging material 1 may be a packaging bag 2 to receive the object therein. The present invention is not limited to the packaging bag 2, however.
[0030] The packaging bag 2 comprises two multi-layered sections 10 adjacent with each other. Each of the two multi-layered sections 10 includes an outer film 11, and an inner film 13 layered inside the outer film 11 to contact the object 3 to be packaged. The outer film 11 and the inner film 13 are layered, so that they are not attached with each other, but separated from each other. Accordingly, the outer film 11 is movable with respect to the inner film 13.
[0031] The outer film 11 and the inner film 13 are formed to have a coefficient of friction different from each other. To be more specific, the outer film 11 is formed of a material, e.g., a high-density polyethylene (HDPE), having a small coefficient of friction, and the inner film 13 is formed of a material, e.g., a low-density polyethylene (LDPE), having a large coefficient of friction. At this time, the inner film 13 can be formed in the shape of foam to carry out a cushioning function. In this case, the inner film 13 functions to protect the object 3 from an impact, as well as from moisture, dust, mold, etc.
[0032] The packaging bag 2 is configured, such that the two multi-layered sections 10 at three edges E1, E2 and E3 thereof are joined with each other and at one edge E4 thereof, separated from each other, thereby forming a pocket. The joining between the two multi-layered sections 10 at the three edges E1, E2 and E3 can be carried out by a hot seal process.
[0033] Here, although the multi-layered sections 10 are illustrated and explained as joined with each other at the three edges E1, E2 and E3 thereof, the present invention is not limited thereto. For instance, the packaging bag 2 can be configured, such that the multi-layered sections 10 are joined with each other at one or more of four edges E1, E2, E3 and E4 thereof.
[0034] The object 3 may be, but is not limited to, household appliances such as a LCD monitor, a LCD TV, an air conditioner, a handset, a refrigerator, a home theater, etc., household goods such as furniture, etc., or machinery and tools, which have a surface polished at a high level.
[0035] Referring to FIG. 3, there is illustrated a package 30 to which the packaging bag 2 is applied. The package 30 includes a package bag 2, a cushion member 31, and a packaging box 33. The package bag 2 constitutes the packaging material 1 and has the same structure as described with reference to FIGS. 1 and 2. The cushion member 31 is disposed to contact an outer surface of the outer film 11. The packaging box 33 receives the cushion member 31.
[0037] First, the object 3 is inserted between the two multi-layered sections 10 of the packaging bag 2, so that it comes in contact with the inner film 13 of the packaging bag 2.
[0038] Then, the cushion member 31 is provided outside the outer film 11 to fix the outer surface of the outer film 11.
[0039] Thereafter, the cushion member 31 in which the object 3 inserted between the two multi-layered sections 10 is contained is inserted into and fixed in the packaging box 33. As a result, the operation of packaging the object 3 is completed.
[0040] If an external impact is applied to the package 30 packaged as above, the object 3 moves along with the inner film 13 because it contacts the inner film 13 having the large coefficient of friction. Also, the cushion member 31 moves along with the outer film 11 because it contacts the outer film 11 having the low coefficient of friction. As a result, a place, in which alargest movement is generated, is between the inner film 13 and the outer film 11. Accordingly, the object 3 is prevented from being scratched or damaged.
[0041] As illustrated in FIG. 4, the packaging bag 2 further includes a subsidiary film 14 layered outside the inner film 13, i.e., opposite to the outer film 11. The subsidiary film 14 is preferably formed of a material, e.g., a high-density polyethylene (HDPE), having a coefficient of friction, which is lower than that of the inner film 13 and which can most effectively move the outer film 11 with respect to the subsidiary film 14.
[0042] Accordingly, if the external impact is applied to the package 30, the outer film 11 is more effectively moved because it comes in contact with the subsidiary film 14 having the coefficient of friction, which is lower than that of the inner film 13.
[0043] The subsidiary film 14 also functions to prevent the inner film 13 formed of the low-density polyethylene (LDPE) from being easily torn.
[0044] As previously noted, although the packaging material 1 in accordance with the exemplary embodiment of the present invention has been described as the packaging bag 2 in the shape of the pocket, it is not limited thereto. For instance, the packaging material 1 in accordance with the exemplary embodiment of the present invention can be formed in such a manner that a single multi-layered section 10 having an inner film 13 and an outer film 11 wraps around the outer surface of the object 3. In this case, it is also important to bring the object 3 in contact with the inner film 13 having a large coefficient of friction and to dispose the outer film 11 having a small coefficient of friction most outside.
[0045] According to the exemplary embodiments of the present invention as described above, the packaging material, i.e., the packaging bag, is configured, such that if an external impact is applied to the package, the outer film having the small coefficient of friction moves along with the cushion member with being in contact therewith. Accordingly, a movement of the object, which comes in contact with the inner film having the large coefficient of friction, to the inner film is reduced, thereby preventing the object from being scratched or damaged.
[0046] Also, according to the exemplary embodiments of the present invention, the packaging material has a multi-layered structure having the outer film of high density and the inner film of low density. Accordingly, a foaming gas such as a pentane gas or butane gas, which is possible to remain in the cushion member, is blocked from being conveyed to the object. The foaming gas, which is used to form the cushion member in the shape of foam during the foaming, usually remains in the foamed cushion member for about a month.
[0047] Although a few exemplary embodiments of the present general invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles of the invention, the scope of which is defined in the appended claims.
an outer film (11); and
an inner film (13) to contact an object (3) to be packaged,
the inner and outer film being separated from each other except at one or more edges (E1, E2, E3) so that the outer film is movable with respect to the inner film, the outer film having a smaller coefficient of friction than the inner film,
characterized by a subsidiary film (14) layered between the inner film and the outer film, wherein the subsidiary film, (14) is formed of a material having a coefficient of friction smaller than that of the inner film.at least two multi-layered sections adjacent with each other, said section being formed of a material according to any of the previous claims.
a multi-layered packaging material according to any of the claims 1-5 to package an object (3), the inner film being disposed to contact the object (3) a cushion member (31) provided outside the outer film; and
a packaging box (33) to receive the cushion member,
wherein when the cushion member contacts the outer film and transmits an external impact thereto, the largest movement is generated between the inner film and the outer film.packaging an object (3) with a multi-layered packaging material according to any of the claims 1-5, in such a manner that the inner film (13) is disposed to contact the object and the outer film (11) is disposed outside the inner film and movable with respect to the inner film;
providing a cushion member (31) outside the outer film; and
inserting the packaged object (3) together with the cushion member (31) into a packaging box (33).
eine Außenfolie (11); und
eine Innenfolie (13), um einen zu verpackenden Gegenstand (3) zu berühren,
wobei die Innen- und Außenfolie voneinander getrennt sind außer an einer oder mehreren
Kanten (E1, E2, E3), so dass die Außenfolie in Bezug auf die Innenfolie beweglich
ist, wobei die Außenfolie einen geringeren Reibungskoeffizienten als die Innenfolie
aufweist, gekennzeichnet durch eine Hilfsfolie (14), die zwischen die Innenfolie und die Außenfolie geschichtet
ist, wobei die Hilfsfolie (14) aus einem Material mit einem Reibungskoeffizienten
geformt ist, der geringer als jener der Innenfolie ist.
zumindest zwei mehrschichtige Abschnitte, die aneinandergrenzen, wobei die Abschnitte aus einem Material nach einem der vorstehenden Ansprüche geformt sind.
ein mehrschichtiges Verpackungsmaterial nach einem der Ansprüche 1-5, um einen Gegenstand (3) zu verpacken, wobei die Innenfolie angeordnet ist, um den Gegenstand (3) zu berühren, wobei ein Polsterungselement (31) außerhalb der Außenfolie vorgesehen ist; und
eine Verpackungsschachtel (33), um das Polsterungselement aufzunehmen, wobei, wenn das Polsterungselement die Außenfolie berührt und einen externen Stoß darauf überträgt, die größte Bewegung zwischen der Innenfolie und der Außenfolie erzeugt wird.
Verpacken eines Gegenstands (3) mit einem mehrschichtigen Verpackungsmaterial nach einem der Ansprüche 1-5, in solch einer Weise, dass die Innenfolie (13) angeordnet ist, um den Gegenstand zu berühren, und die Außenfolie (11) außerhalb der Innenfolie angeordnet und in Bezug auf die Innenfolie beweglich ist;
Bereitstellen eines Polsterungselements (31) außerhalb der Außenfolie; und
Hineintun des verpackten Gegenstands (3) zusammen mit dem Polsterungselement (31) in eine Verpackungsschachtel (33).
une pellicule extérieure (11) ; et
une pellicule intérieure (13) destinée à venir en contact avec un objet (3) à emballer,
la pellicule intérieure et la pellicule extérieure étant séparées l'une de l'autre, excepté au niveau d'au moins un de leurs bords (E1, E2, E3), si bien que la pellicule extérieure est mobile par rapport à la pellicule intérieure, la pellicule extérieure ayant un coefficient de frottement inférieur à celui de la pellicule intérieure, caractérisé par
une pellicule subsidiaire (14) prise en sandwich entre la pellicule intérieure et la pellicule extérieure, la pellicule subsidiaire (14) étant réalisée dans un matériau possédant un coefficient de frottement inférieur à celui de la pellicule intérieure.
au moins deux sections multicouches adjacentes l'une à l'autre, lesdites sections étant réalisées dans un matériau selon l'une quelconque des revendications précédentes.
un matériau d'emballage multicouche selon l'une quelconque des revendications 1 à 5 destiné à l'emballage d'un objet (3), la pellicule intérieure étant destinée à venir en contact avec l'objet (3), un élément de rembourrage (31) prévu en dehors de la pellicule extérieure ; et
une boîte d'emballage (33) destinée à recevoir l'élément de rembourrage,
dans lequel, lorsque l'élément de rembourrage est en contact avec la pellicule extérieure et transmet un impact externe à celle-ci, le mouvement le plus important est généré entre la pellicule intérieure et la pellicule extérieure.l'emballage d'un objet (3) dans un matériau d'emballage multicouche selon l'une quelconque des revendications 1 à 5, de telle manière que la pellicule intérieure (13) soit disposée de façon à être en contact avec l'objet et que la pellicule extérieure (11) soit disposée en dehors de la pellicule intérieure et soit mobile par rapport à la pellicule intérieure ;
la mise en place d'un élément de rembourrage (31) en dehors de la pellicule extérieure ; et
l'insertion de l'objet (3) emballé conjointement avec l'élément de rembourrage (31) dans une boîte d'emballage (33) .
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description