JP3923309B2 - Manufacturing method of zipper tape for bags - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a zipper tape that is used for resealing in a mouth portion of a bag.
[0002]
[Prior art]
A conventional zipper for a bag is formed by extruding two base tapes for sealing on the inner surface of a bag, and male and female strips formed on the upper surface of the base tape, integrally from an extruder. Yes.
Then , by coloring the zipper tape so that it can be seen that the zipper tape is installed in the mouth of the bag, or if it is desired to be colorful in design, the molten resin used as the material A colorant must be added and extruded from the extruder.
[0003]
For this reason, it is possible to color the entire zipper tape in the same color, but it is not possible to color only the male strip and female strip, or the occlusal portion and the base tape side separately. In the case of this design, there is a disadvantage that the design of the zipper portion is less changed than the other portions.
[0004]
Also, in the case of zipper tape, if it is installed in the mouth of the bag, the zipper tape can be directly seen only on the surface of the base tape and the occlusal portion, so that characters such as the occlusal portion are sealed on the zipper tape. Printing the caution character such as "Please check if the zipper tape has not changed to blue if it is not blue again" to prompt the condition check. I can't. However, it is convenient to be able to print such notes.
[0005]
[Problems to be solved by the invention]
The present invention has been made is proposed in view of the斯Ru point, the purpose of that, in the zipper tape, the zipper tape is attached to the mouth of the bag is to be seen from outside visually (color) At the same time, it is to provide a method for producing a zipper tape for a bag that can contribute to purchase by increasing the value of the bag and the product filled in the bag by making the design of the surface of the bag colorful.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the invention according to claim 1, a. In the method of manufacturing a bag zipper tape in which the male strip 2 is heat-sealed to the surface of the base tape 1 and the female strip 4 is heat-sealed to the surface of the base tape 3, the wide base tape 1 is wound in a roll shape. The process of taking,
b. A step of feeding out the base tape 1 wound in the roll shape;
c. A base tape is formed by extruding molten resin colored in a different color for each of the paired extrusion machines 22a and 22b so that adjacent male strips 2 and female strips 4 are in pairs. Forming an occlusal portion by heat fusion to the surface of the heat fusion film of 1;
d. A multi-row male strip 2 and female strip 4, each of which forms a pair of base tapes 1 for each strip;
e. A step of forming a zipper tape by engaging the male strip 2 of the cut base tape 1 and the female strip 4 adjacent to the male strip 2;
f. Winding each zipper tape into a product,
g. It is characterized by comprising.
[ 0008 ]
Figure 1 shows a zipper tapes more produced in the present invention as set forth in claim 1, 1 male side of the base tape, 2 Ojo which is heat-welded to the surface of the base tape 1, 3 female The base tape 4 on the side is a female strip thermally welded to the surface of the base tape 3, and the male strip 2 and the female strip 4 can be engaged and disengaged.
[ 0009 ]
The base tapes 1 and 3 have a three-layer structure in the embodiment, and an outer layer (a layer heat-sealed on the inner surface of the bag) and an inner layer (a layer in which the male strip 2 and the female strip 4 are heat-sealed). ) Is formed of a polyethylene-based resin, and the intermediate layer film inserted between the outer layer and the inner layer is formed of a biaxially stretched polyester film. The male strip 2 and the female strip 4 are both formed of polyethylene resin. However, these materials are examples, and other films and resins can be selected according to the function.
Reference numeral 5 denotes a note of “occlusion confirmation” printed on the surface of the base tape 1 on the male strip 2 side and the base tape 3 on the female strip 4 side.
[ 0010 ]
FIG. 2 shows a state in which the above zipper tape is mounted in the mouth portion 11 of the bag 10, and the base tapes 1 and 3 on the male side and the female side face the inner surface of the mouth portion 11 of the bag 10 by a heat sealing method, respectively. It is heat sealed. As is clear from this, a polyethylene film layer is formed on the inner surface of the bag 10 of the embodiment for heat sealing.
[ 0011 ]
FIG. 3 is an explanatory diagram of a state in which after filling the contents, the zipper is closed and the mouth portion 11 of the bag 10 is also mouth-sealed 12 by a heat sealing method. Reference numeral 13 denotes a V-cut, from which the mouth 11 of the bag 10 can be opened as shown in FIG.
In the zipper tape having the above-described configuration, characters for prompting occlusion confirmation are printed on the inner surface (example of occlusion) of the base tape 1 or 3, so that the occlusion confirmation is enforced when the mouth 11 of the bag 10 is resealed. And there is no need to worry about unexpected failures such as leakage of contents from the zipper.
[0012]
Further, by coloring the base tape 1 or 3, this color can be visually observed from the outside of the bag 10, and it is easy to understand that the bag is a zippered bag.
In addition, by changing the colors of the base tape 1 and 3 side, the design of the front and back of the bag 10 is not restricted by the color of the design of the bag 10 because there is a zipper, and the design freedom is increased. Increase .
[ 0013 ]
Next, the manufacturing method of a zipper tape is demonstrated below. FIG. 4 shows a state where a male zipper tape is manufactured by extruding male strips 2 and female strips 4 on a wide base tape film 20 using a profile extruder. In FIG. 4, reference numeral 20 denotes a wide base tape film before being slit and divided into base tapes 1 and 3. The base tape film 20 is unwound from a roll, and then printed by a printing cylinder 21 for a cautionary note 5. A note 5 is printed, and then at the profile extruder 22, the male strip 2 and the female strip 4 are alternately pushed out from the die of the profile extruder 22. The male strip 2 and the female strip 4 are heat-sealed to the surface of the base tape film 20 with the heat, and then cooled with water in the cooling bath 23, and then slitted for each strip with a slitter 24 as shown in FIG. The adjacent male strips 2 and female strips 4 are bitten by the biting machine 25 and then combed.
[ 0014 ]
FIG. 6 shows a case where the male strip 2 and the female strip 4 are colored in different colors. At this time, the male strip 2 side and the female strip 4 side extruder 22 are divided into 22a and 22b, respectively. A resin blended with a colorant is filled, and the male strip 2 and the female strip 4 of different colors can be fused and formed on the base tape film 20.
[ 0015 ]
【The invention's effect】
As described above, in the zipper tape, the present invention provides a bag having a transparent or translucent zipper part by applying characters, figures, colors, or the like to the base tape or the male and female strips for occlusion. The zipper can be visually checked from the outside.
In addition, since characters, figures, and colors can be printed on the occlusal side of the base tape, this print can be seen visually when the zipper tape is opened, and notes can be displayed on the surface of this easy-to-see base tape. Convenient.
In addition, by color-coding the occlusal portion, it is possible to confirm occlusion by a change in color when occluded.
Moreover, the design of a bag can be colorfulized also in a zipper part by performing a figure, a pattern, or coloring on the outer side of a zipper tape.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a zipper tape according to the present invention.
FIG. 2 is an explanatory view showing a state in which a zipper tape is mounted in the mouth of the bag.
FIG. 3 is an explanatory view showing a state where a mouth portion of a bag with a zipper is sealed by heat sealing.
FIG. 4 is an explanatory view of a method for producing a zipper tape according to the present invention.
FIG. 5 is an explanatory view of a method for producing a zipper tape having occlusal portions of different colors in the present invention.
FIG. 6 is an explanatory diagram of a state in which the male and female occlusion portions are formed using separate extruders in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Male strip side base tape 2 Male strip 3 Female strip side base tape 4 Female strip 5 Precautionary note 10 Bag 11 Mouth part 12 Port seal 13 V cut 20 Base tape film 21 Cylinder 22 Profile extrusion machine 23 Cooling tank 24 Slitter 25 Articulation machine

Claims (1)

a. In the method of manufacturing a bag zipper tape in which the male strip 2 is heat-sealed to the surface of the base tape 1 and the female strip 4 is heat-sealed to the surface of the base tape 3, the wide base tape 1 is wound in a roll shape. The process of taking,
b. A step of feeding out the base tape 1 wound in the roll shape;
c. A base tape is formed by extruding molten resin colored in a different color for each of the paired extrusion machines 22a and 22b so that adjacent male strips 2 and female strips 4 are in pairs. Forming an occlusal portion by heat fusion to the surface of the heat fusion film of 1;
d. A multi-row male strip 2 and female strip 4, each of which forms a pair of base tapes 1 for each strip;
e. A step of forming a zipper tape by engaging the male strip 2 of the cut base tape 1 and the female strip 4 adjacent to the male strip 2;
f. Winding each zipper tape into a product,
g. The manufacturing method of the zipper tape for bags which consists of.

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