JPS5974057A - Tab of easy-open vessel and manufacture of its tab - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gel tab for an easy-open can. Today, can containers filled with various contents, including canned beer and canned cola, have a gel tab attached to the rivet-in trowel can lid 10 as shown in Fig. 1, and the pull tab 20-
Many containers are used which have a structure in which the opening 128 surrounded by the cut line 13 is opened by lifting the container.

By the way, the manufacturing order for forming the pull tab is as shown in FIG. 2, by punching out the outer shape of the tough material 21 with an annular cut line 16 excluding the connection part 22 of the required width on the metal strip coil 15 of the required width. (FIG. 2A) sF7F tab material 21f (coil 15)
While the coil is permanently fixed to the strip coil 15, the rivet hole 2 is
3, the gel tab 20 was completed by forming the gel tab 20 as appropriate and performing necessary tab forming processes such as providing a peripheral curl 24 (FIG. 2B), and then cutting the connecting portion 22.

In the gel tab t manufactured by straining as described above, the curl part provided on the periphery of the lifting part (9) forms the connecting part at the center of the periphery of the lifting part (9), /J-Role was not provided, so the fingertips were sometimes injured when opening the can. Therefore, when manufacturing the pull tab 20, by providing the connection parts 22 between the strip coil 15 and the tab material 21 on the left and right sides of the pull tab 20 (vertical direction in FIG. 2), curling can be prevented even in the central part of the lifting part. I decided to set it up. However, providing the connecting portions on both sides in this way requires a width equal to the width of the coil 15 plus the width of the tab material 21 plus the length of the two connecting portions 22, and a wide band-shaped coil is required. The disadvantage of lS is that there is a lot of wastage of materials. In addition, as shown in FIG. 2, when the connecting portion 22 is provided along the center edge of the band-shaped coil 15, it is opposite to the connecting portion 22 centering on the rivet hole 23 in the gel tab application as shown in FIGS. 2 and 3. Since the processed material part n on the side is bent and requires complicated processing to add necessary strength, the connecting part η is naturally provided on the side of the lifting part 30 of the pull tab. Since the connecting part 22 is provided on the second part (material) side of the pull tab 20 and the tab processing is performed in this way, in the lifting part of the pull tab 20, the peripheral edge curls at the cut end n position of the connecting part 22 as described above. Due to the discontinuity, when opening the can, the discontinuity comes into contact with the finger, which not only causes discomfort but also sometimes stings the finger.

Therefore, when the connecting part 22 is provided on the lifting part (material) side of the gel tab, the width of the connecting part 22 may be made narrower, or the lifting part (material) may be provided on both sides of the connecting part cutting end part as shown in FIG. In addition, as shown in the side view of FIG. 5, the circumferential curl 24 was crushed on both sides of the cut end to prevent the discontinuous portion of the circumferential curl from coming into contact with the finger as much as possible. It wasn't enough.

The present invention eliminates the above-mentioned drawbacks, makes efficient use of materials, and
A bulge 25 is formed on the peripheral curl 24 at both ends of the connecting portion 22.
Comparison 09 The gel tab 20 can be easily formed with a simple external shape without providing a gel tab, and the gel tab has a structure that does not hurt fingers when opening the cut end and a method for manufacturing the gel tab. As follows.

The pull tab according to the present invention is attached to the connecting portion 2 as shown in FIG.
The connecting portion 22 is cut at the side end of the second strip coil 15, and the connecting portion 22 is curled so that the cut end 28 is positioned inward as shown in the back view of FIG. 7 and the sectional view of FIG. In other words, when adding a pull tab for use in a glu-open type easy-open can, the connecting portion 22 that connects the tab material 21 and the strip coil 15 during tab processing is also curled in the same way as the periphery of the tab. It is added with gel tab.

Since the cut end of the connecting portion 22 is curled in this way, the tough peripheral curl 24 prevents the cut end from coming into contact with the finger, and there is no risk of the finger being stung when the opening is made. Also, as shown in FIG. 4, there is no need to provide the bulge 25 on the peripheral curl, and the shape of the lifting part (material) is 9th when viewed from the top.
As shown in the figure, since the outer shape can be simplified, one peripheral edge curling process can be easily performed, and productivity of the gel tab can be increased.

When curling the connecting portion 22 as described above, first, as shown in FIG. After forming the outer shape, forming the rivet holes and bending the required peripheral edges, as shown in Fig. 4410, the tab material 21 is recessed further than the belt-shaped coil 15,
Furthermore, a concave portion 26 for reinforcing the tab is formed, and thereby the connecting portion 22
is horizontally S-shaped. Then, the tab material 21♂ of the connecting portion 22 is cut at the opposite end. By forming the connecting portion 22 into a horizontal S-shape in this way, it becomes easy to curl the cut end portion of the connecting portion.

If the connecting portion 22 is curled in this manner, the curling process can be performed by simply bending the vicinity of the cut end row of the connecting portion 22 inward, and the connecting portion 22 can be curled easily. There are advantages.

That is, the method for manufacturing a gel tab according to the present invention includes tab material 2.
A connecting part 22 between the belt-shaped coil 15 and the belt-shaped coil is provided along the center line of the belt-shaped coil, and a ring-shaped part excluding the connecting part 22) a1
6, the outer shape of the tab material 21 is punched out from the strip coil 15 force S, and the tab material 21 is subjected to tab forming processing without separating and cutting the tab material 21 from the strip coil 15. A gel tab characterized in that after forming the recessed connecting portion 22 in an S-shape, the end portion of the connecting portion 22 on the side of the band-shaped coil is cut, and the end portion 28 of the recessed connecting portion 22 is curled. This is a manufacturing method.

This machine number Kotab material @ 21 is made to be more pupil than the coil material 15, and the connecting portion 22 is cut after scraping in an S shape, and curled, so the curling process is improved, and the connecting portion 2
2 is curled, so that when opening the can container, the fingers do not come into contact with the cut end 28, causing no discomfort, and there is no risk of finger sting. Because it is installed along the center line, material is wasted 71 <
This is a manufacturing method that can be used with numerous advantages.

[Brief explanation of drawings]

Fig. 1 is a 5f'-plane view of a can lid with a gel tab, Fig. 2 is a view showing the processing of the pull tab, Fig. 3 is a vertical cross-sectional view of the gel tab, and Figs. 4 and 5 are parts of the gel tab. FIG. 6 shows the main part of the GEL TAB according to the present invention in a state where it is cut from the band-shaped coil force), and FIG. FIG. 8 is a vertical cross-sectional view of the main part of the gel tab according to the present invention, FIG. 9 is a plan view of the gel tab according to the invention, and FIG. 10 is a view showing the connection section cut away. 10=Can lid, 11=Rebent, 12-Opening sound μ, 13-Score line, 15=Strip coil, 16 Nica'
21=-tab material, 22=connecting part, captive rivet hole, 24=peripheral curl, part=bulging part, ni=concave part, 27=ribent hole (Ully
#A sound μ, force = cut end, (capital) - lifting part. Procedural amendment (method) Mr. Kazuo Wakasugi, Director General of the Non-Patent Office of the Showa era 1. Indication of the case % Kosho 67-1'1626 2. Name of the invention Method for manufacturing easy-to-open containers with tough tabs 3 Relationship to the Sleeveless Bow Case Applicant: 3-1 Uchiyuki, Juyoda-ku, Tokyo (316) Toyo Sokan Co., Ltd. Agent: 2-14-10 Sangenjaya, Setagaya-ku, Tokyo -70'71 Homura Wa Edict February 2, 2015 (1) Item 7 of the "Title of the Invention" stated in the specification, Contents of amendment (1) The "Title of the Invention" in the description includes "Easy-open container" ``Tab and cup manufacturing method'' should be corrected to ``tab for easy-open containers and method for manufacturing the tab.''

Claims (1)

[Scope of Claims] (1) In the gel tab used for Gluo Oven Taig's easy-open cans, the connecting portion of the tab material and the band-shaped coil when performing tab processing is the same as the peripheral edge of the tab (this is the same as the circumference of the tab). (2) A connecting portion between the tab material and the strip coil is provided along the center line of the strip coil, and the outer shape of the tab material is punched out from the strip coil using an annular cut line excluding the connecting portion. In a pull tab manufacturing method in which tab forming is performed without cutting and separating the tab from the belt-shaped coil, after the tab material is recessed and the connecting portion is formed in the shape of 8,
A method for producing a pull tab, which comprises cutting the end portion of the connecting portion on the side of the band-shaped coil, and then curling the end portion of the vaginal connecting portion.