JPS63110108A - Method and device for manufacturing easily unsealable package - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of industrial application The present invention relates to a method and apparatus for manufacturing a package whose lid is easy to open, which is manufactured, for example, in mold-fill packaging.6 (b) Prior art For example, as shown in FIG. 6, an easy-to-open package is formed by forming an IIM part C lower than the surface of the flange on the outer circumferential side of a flange a around a container r formed on a container film F; The flange and the cover film 11 are adhesively sealed around the container r, and the cover film is peeled off from the container film by pinching the part corresponding to the peeled part of the cover film, or Utility Model Application No. 54-1585
As shown in No. 75, there is a container in which a convex portion is provided in a part of the container outside the bonded portion between the container film and the cover film, so that the cover film J\ can be easily peeled off from that part.

However, since the container film and the cover film are sealed in a ring shape with a certain width, when the adhesive force between the container film and the cover film is strong, such as with heat sealing, a large amount of force is required to peel off the cover film. On the other hand, if the seal width is narrowed in order to reduce the peeling force, there is a problem that the seal cannot be completely sealed against the outside air.

(c) Problems to be Solved by the Invention The problems to be solved by the present invention are to provide a method and apparatus for producing a package with a complete seal and an easy-to-open lid.

(d) Means for Solving the Problem In order to solve the above problem, the first invention of the present application is to form a container on a container film, put an item into the container 2'a, and cover the container film with a cover. In a method for manufacturing a package formed by covering and sealing a film, note that the container film is constructed by peelably bonding multiple layers of films, and the outermost layer of the container film has an annular shape surrounding the container. a peeling slit is formed in the lower film of the container film on the outside of the slit, the cover film is adhesive-sealed to the two-most layer of the container film around the outer periphery of the slit, and The adhesive force between the upper and lower films of the container film is made smaller than the adhesive force between the uppermost layer of the container film and the lowermost layer of the cover film.

The second invention of the present application is to form a container using a container film made by peelably bonding multiple layers of films to each other, place an item in the container, and cover the container film with a cover film for sealing. In an apparatus for manufacturing a package consisting of a container film, a lowermost layer film of the container film is placed between a molding device that molds a container into the container film and a sealing device that adhesively seals the container film and the cover film. Is there an annular upper blade that forms a surrounding annular slit and a lower film of the container film outside the slit? ! (ii) A slitter having a lower blade that forms a slit.

(E) Function In the above configuration, after forming a container film into an 8-container film using a molding device, a slitter forms a film annular slit in the upper layer of the container film and a peeling slit in the lower layer film. After filling the container with the crystal material, a cover film is placed over the container film t, and the container film and the cover film are adhesively sealed using a sealing device a.

When removing the cover film of the package from the container film, what should I do? :+1 #'l from i1 slit part
When the release begins, the top and bottom films of the container film are separated by 1 inch around the annular sleeve I to accommodate the cover film.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a device 1 for carrying out the method of the invention is schematically shown. In the figure, F is a container film made up of multiple layers (two layers in this example) of films F1 and F2, and f is a cover made of films f1 and f2/l' that are also multiple layers (two layers in this example). It's a film. The '8 film is designed so that the adhesive force between the lower layer film F and the upper layer FILNO Y F2 is smaller than the adhesive force when sealing the upper layer film F2 and the lower layer film f1 of the cover film f. Choose one in advance depending on the type of sticker.

In FIG. 1, 2 is a heater that passes through the container film F, 3 is a molding device that molds a volume R% +- on the container film F, and 4 is a film F2 on the upper layer of the film F. a slitter that forms an annular sleeve I-8 on the container film and a profit slit on the lower film F1 of the container film; 5 a filling device that fills the container r with the product; 6 a container film F and a cover film f; A sealing device 7 heat-seals the container film and the cover film, and a punching device 7 punches out the package 10 from the sealed container film and cover film.

In the above apparatus, the container film F is overripened by the heater 2, and then the container r is formed by the forming bag; Thereafter, when the container film r formed on the container film is sent to the slitter 4, the lower mold 41 rises and receives the container r in its recess 42, and the upper mold 43 is heated by the heater 44.
descends, and as shown in FIG. 46, a peeling rib 1-s is formed on the lower layer film F outside the annular slit v I-S.

Next, when the container r is sent under the filling device 5, the product is filled into the container, and the container film F is covered with a cover film Af just before the sealing device, and the container film F and the cover are sealed by the seal 6. The film f is heat sealed.

At this time, the upper film F2 of the container film F and the lower film f of the cover film f are annularly heat-sealed at the outer periphery of the annular slit S, as shown in FIGS. 3 and 4. . Thereafter, the package 10 is punched out by the punching device 7 6 The position of the annular seal is as shown in No. 3121,
It is necessary to prevent fz from entering the inside of the annular slit S, and it is preferable to set the distance from the slit S by about 1 to 2xx.

When peeling the lid of the package 10 formed as described above, that is, the cover film f, from the container film F, the cover film f is removed from the peeling slit S by pinching it with your fingers (!11) and pulling it upward. As shown in 41A, the upper film F2 of the container film F around the annular slit S is peeled off while sticking to the cover film.

(1.) Effects In the package made according to the present invention, the container film is made of multiple layers of films that can be peeled off from each other. becomes easier.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a schematic diagram of an apparatus for carrying out the method for producing a package according to the present invention, Fig. 2 is a diagram showing the operation 3 of forming a slit in a container fill l, and Fig. 3 is a diagram of the packaging body. No. 4 I is a top view of the package, No. 5t6 is a view showing the poor opening state, FIGS. 6 [A] and [B] are a top view and a sectional view of the conventional package, FIG. 7 is a diagram showing the operation of opening the lid of the package shown in FIG. 6. F: Container film f: Cover film S/Slit S-51j To slit 1 r, Container 1: Packaging manufacturing device 3, Forming device l Toslitter 5: Filling device 6, Seal + device (Tato 5 people)

Claims (1)

[Claims] 1. A method for manufacturing a package in which a container is formed into a container film, an item is placed in the container, and a cover film is placed on the container film for sealing, the method comprising: forming a plurality of layers of the container film; films are peelably joined to each other, an annular slit surrounding the container is formed in the uppermost film of the container film, and a peeling slit is formed outside of the slit in the lower film of the container film. Then, the cover film is adhesively sealed to the top layer film of the container film around the outer periphery of the slit, and the adhesive force between the top and bottom films of the container film is applied to the top layer film of the container film and the bottom layer of the cover film. A method for producing an easy-to-open package, characterized in that the adhesive force is smaller than that with a film. 2. A manufacturing device for a package formed by molding a container into a container film made by peelably bonding multiple layers of film to each other, placing an item in the container, and sealing the container film by covering it with a cover film. An annular slit that forms an annular slit surrounding the container in the uppermost film of the container film is installed between a molding device that molds a container onto the container film and a sealing device that adhesively seals the container film and the cover film. An apparatus for producing an easy-to-open package, characterized in that a slitter is provided with an upper blade and a lower blade that forms a peeling slit outside the slit in the lower film of the container film.