JP4298424B2 - Shrink film packaging - Google Patents

Description

  The present invention relates to a shrink film package used for collective packaging of beverages and food cans.

  Conventionally, as described in Patent Document 1 below, in a shrink film package in which a package is wrapped with a uniaxially stretched film and the film is heat-shrinked and closely adhered to the package, a position slightly separated from one end of the film It is known that a notch is formed by forming a knob, and a film is torn from the knob to the other end edge in a stretching direction in a strip shape and opened.

Japanese Utility Model Publication No. 55-30805

  However, in the packaging body as described above, the band-shaped portion that is torn along with opening may be separated from the main body portion of the film that wraps the article to be packaged, and may be dissipated as garbage separate from the main body portion. In this case, there was a problem that the band-shaped portion had to be picked up and discarded.

  Then, this invention makes it a subject to provide the shrink film package which a strip | belt-shaped part does not isolate | separate even if it opens.

  In order to solve the above-mentioned problems, the present invention wraps an object to be packaged by a uniaxially stretched film, heat-shrinks the film to closely adhere to the object to be packaged, and makes a film in a stretching direction from a knob formed by making a cut. In the shrink film package that is torn and opened so as to form a band-shaped portion, a cut is made at intervals so as to traverse the portion where both side edges of the band-shaped portion reach.

  When the above-mentioned cut is made, when the both side edges of the belt-like portion reach the cut, the progress of the cutting is stopped, and the belt-like portion is separated from the main body portion of the film that wraps the package by the connection between the cuts. These can be discarded as one piece of garbage.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 1, this shrink film package wraps six beverage cans C with a uniaxially stretched heat-shrinkable film 1 and heat-shrinks the film 1 to closely contact the cans C. C is assembled and packaged.

  On the upper side of the can C, a U-shaped cut 2 is formed on one side of the film 1 toward the other side, which is the stretching direction of the film 1, and a knob 3 is formed on the inner side. . On the other side of the film 1, a pair of cuts 4 are made at intervals so as to cross the extended lines from both ends of the cut 2.

  In a state before the film 1 is thermally shrunk, as shown in FIG. 2, the cut 2 and the cut 4 are located at portions slightly away from the one and other side edges of the film 1, respectively. As shown in FIG. 1, when six cans C are arranged and packaged, both end portions of the film 1 are overlapped on the lower side of the cans C and thermally welded.

  Now, when opening such a shrink film package, the knob 3 slightly lifted due to heat shrinkage is picked, and as shown in FIG. 3, the band 1 is formed with the film 1 facing the other side. Tear like so. At this time, since the film 1 has the property of being easily torn in the stretching direction, the film 1 is cut without the strip portion 5 being cut off in the middle.

  And since the progress of the cutting | disconnection stops when the both-sides edge of the strip | belt-shaped part 5 reaches the cut 4, in this state, the film 1 is opened to both sides from the crevice by the strip | belt-shaped part 5, Take out can C from inside.

  In the package opened in this way, the band-shaped portion 5 is connected without being separated from the main body portion of the film 1 that wraps the six cans C due to the connection between the pair of cuts 4. The belt-like portion 5 can be discarded as an integrated garbage.

  In addition, this package is torn and opened in the stretching direction in accordance with the properties of the film 1 and does not include weak lines such as perforations over the entire length of the belt-like portion 5. Thus, the strength in the packaged state does not decrease.

  Furthermore, since the knob 3 for opening is formed by cutting the cut 2 into the film 1 without protruding from the side edge of the film 1, the material can be used effectively, and the cost can be reduced. It can be manufactured without an increase.

The perspective view which shows the packaging state of the shrink film package which concerns on this invention The figure which shows the state before heat shrink of a film same as the above The perspective view which shows the opening process from a packaging state same as the above

Explanation of symbols

1 Film 2 Notch 3 Knob 4 Cut 5 Strip

Claims (1)

Wrapping a plurality of packages to be packaged by a uniaxially stretched film, heat shrinking the film to make it tightly adhere to the package, and forming a strip from the knob formed by making a cut In the shrink film package to be opened by tearing, the direction intersecting the film stretching direction so as to cross the portions where both side edges of the band-shaped portion reach from the both ends of the cut forming the knob toward the film stretching direction. A cut is made at intervals, and the belt-like portion extends over the entire length of the packaged objects, and the cut that is the end of the belt-like portion is located at a portion away from the side edge of the film. Shrink film package.

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