Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
  • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
  • B65D71/08—Wrappers shrunk by heat or under tension, e.g. stretch films or films tensioned by compressed articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/52—Details
  • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/002—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers in shrink films

Definitions

• the present invention relates to a heat-shrinkable package that can be easily opened.
• a package is placed in a heat-shrinkable synthetic resin film formed in a bag shape or a half-fold shape, and the edge of the film is melt-sealed. Performed heat shrink wrapping is commonly performed.
• Such heat-shrinkable packaging has become popular because of its advantages, such as the appearance of the packaged item, that is, the appearance of the product, which is beautiful and clear, and the increased value of the product, and the ability to easily package even complex-shaped packages. Used.
• the perforation method involves heat treatment of the heat-shrinkable film, the perforation hole expands, and dust enters through this hole to reduce the commercial value of the package, Has the disadvantage that the perforations break.
• the method of forming a seal label for opening by sticking a paper sticker on a U-shaped hole it is necessary to install a device for making a U-shaped hole, and a paper seal is required. Is required, which increases the cost.
• the method of attaching an opening tape has a drawback that complications cannot be avoided.
• packaging is performed by an L-type sealer packaging machine using a half-fold heat-shrinkable film, it is extremely difficult to apply the conventional opening method as described above.
• step (1) a notch is formed in at least one of the edges of the heat-shrinkable film to form a notch seal portion, and then the film is subjected to heat shrinkage, so that the protruding piece for opening is formed in the fusing seal portion of the heat-shrinkable film package.
• step (1) a notch is formed in at least one of the edges of the heat-shrinkable film to form a notch seal portion, and then the film is subjected to heat shrinkage, so that the protruding piece for opening is formed in the fusing seal portion of the heat-shrinkable film package.
• one embodiment of the present invention provides a package obtained by encapsulating an object to be packaged with a heat-shrinkable film, fusing and sealing the ⁇ portion, and then thermally shrinking the film.
• the present invention relates to a package having an opening protruding piece formed by forming a cut seal portion by making a cut in an edge portion of a film at one location and then performing heat shrinkage of the film.
• Another aspect of the present invention is a heat-shrinkable packaging method in which an object to be packaged is wrapped with a heat-shrinkable film, and the edge is thermally sealed after the edge is sealed.
• a notch is formed by making a cut in at least one place, and then heat shrinking the film to form an opening protruding piece in at least one of the fusing seal parts of the film.
• the present invention relates to a heat shrink wrapping method for packages.
• FIG. 1 is a view showing one embodiment of the packaging method according to the present invention.
• FIG. 2 is a diagram showing one embodiment of the package according to the present invention.
• FIG. 3 is a diagram showing a state where the package of FIG. 2 is viewed from the left lateral direction.
• FIG. 4 is a diagram illustrating a packaging method according to another embodiment of the present invention.
• C is a diagram illustrating a packaging body according to another embodiment of the present invention.
• FIG. 6 is a diagram showing a state in which the package of FIG. 5 is viewed from the left lateral direction.
• FIG. 1 is a perspective view showing a state in which a package is wrapped with a heat-shrinkable film.
• the heat-shrinkable film 2 is folded in half, the packaged object 1 is accommodated therein, and the edges 3, 3 'and 4 of the film are melt-sealed. Thereafter, the heat-shrinkable film is heated and shrunk to complete a tight package.
• a cut 5 is made in at least one edge of the film, and a cut seal portion 8 is formed. Is formed. The cut 5 may be formed either during or after the package is stored, or the cut may be formed simultaneously with the fusing seal.
• the fusing sealing method that can be used in the method of the present invention, almost all fusing sealing methods such as a heat sealing method and an impulse sealing method conventionally used in heat shrink wrapping can be adopted.
• the heat sealing method is a method in which a heating member, usually in the form of a frame, is pressed against the sealing portion of the heat-shrinkable film, and the portion is fusion-sealed and cut. The above means that the fusion seal is cut by an electric impulse instead of the heating member.
• a notch at the edge of the film is formed by attaching a heating member for forming a notch seal portion to a part of the heating member and forming the notch seal with the fusing seal. At the same time, the formation of the cut seal portion can be performed.
• Figure 2 shows the state in which the heat shrinkage of the film has been completed and the object to be packaged has been packaged in tights.
• Fig. 3 shows the package of Fig. 2 viewed from the left side.
• the cut seal portion 8 formed at the edge of the film is deformed, so that the projecting piece 6 is formed at the fusing seal portion of the film.
• the size and shape of the projecting piece to be formed can be empirically determined by adjusting the shape and length of the cut formed at the edge of the film, the width of the cut seal, and the like.
• the method of heat shrinking the heat shrinkable film is to pass the package through a hot air tunnel.
• a method known in the art and commonly used, such as passing through, may be used.
• Another embodiment of the present invention provides:
• a package obtained by enclosing an object to be packaged with a heat-shrinkable film, fusing and sealing the edge, and then heat shrinking the film at least one of the fusing-sealed portions of the film has an edge of the film.
• a notch is formed in the portion to form a notch seal portion, and thereafter, there is provided an opening protruding piece formed by heat shrinking the film, and an opening marking line is formed on or around the portion of the opening protruding piece.
• a heat-shrinkable packaging method in which a package is wrapped with a heat-shrinkable film, the edge is melt-sealed, and then the film is heat-shrinked, a cut is made by cutting at least one edge of the film. Forming a sealing portion and then heat shrinking the film to form an opening protruding piece at least at one of the fusing and sealing portions of the film.
• a method of heat shrink wrapping of a packaged object characterized by drawing a mark line;
• the opening mark 7 can be drawn on the cut seal portion of the film by a method easily understood by those skilled in the art.
• a printing device is attached to a part of the packaging machine, whereby a notch 5 is formed in the fusing seal portion of the film, and a marking line 7 for opening is formed on or around the notch seal portion 8 formed at the same time.
• an opening mark 7 can be drawn at or around the place where the notch seal portion 8 is to be formed in the film fusing seal portion, or Cut 5 in the fusing seal of the film After that, an opening marking line 7 can be drawn on or around the formed cut seal portion 8 (see FIG. 4).
• the ink used to draw the opening mark 7 a well-known ink in the art can be used.
• a commercially available quick-drying ink can be used.
• the package and the packaging method according to the present invention are not limited to spherical, cylindrical, prismatic or any other shapes. It will be apparent to those skilled in the art that the present invention can be applied to a package. In any aspect, if a notch seal portion is provided by making a cut at any one of the edges of the heat-shrinkable film, and then the heat-shrinking step is performed, a protruding piece can be formed at such a portion. .
• the packaging body and the packaging method according to the present invention use a special device or a further member such as a paper label while maintaining the advantages specific to heat shrinkage such as sealing and aesthetics. It provides an easy-opening means to a heat-shrinkable package very simply and inexpensively without using any of them, and its industrial value is great.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26334402

Family Applications (1)

Country Status (10)

Families Citing this family (7)

Citations (2)

Family Cites Families (4)

• 1994
  • 1994-06-02 JP JP6120931A patent/JPH07242266A/ja active Pending
• 1995
  • 1995-01-10 NZ NZ270317A patent/NZ270317A/en unknown
  • 1995-01-10 CA CA002139901A patent/CA2139901A1/en not_active Abandoned
  • 1995-01-11 BR BR9500068A patent/BR9500068A/pt not_active Application Discontinuation
  • 1995-01-11 AU AU10155/95A patent/AU1015595A/en not_active Abandoned
  • 1995-01-11 CN CN95190914A patent/CN1135741A/zh active Pending
  • 1995-01-11 EP EP95300136A patent/EP0665173A1/en not_active Withdrawn
  • 1995-01-11 WO PCT/JP1995/000016 patent/WO1995018753A1/ja active Search and Examination
  • 1995-01-11 KR KR1019960702612A patent/KR960705724A/ko not_active Ceased
  • 1995-01-13 TW TW084100267A patent/TW262452B/zh active

Patent Citations (2)

Also Published As

Similar Documents

Legal Events