JPH0356539Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to a shrink film molded product for shrink-wrapping the cap and at least a part of the container in a container with a cap.

(Prior Art and Problems to be Solved by the Present Invention) Some tube-shaped containers are tightly wrapped with a shrink film called a virgin seal between the tube-shaped container body and a cap that covers and seals it. This is because the shrink film covers the cap and part of the container, and when the cap is opened for use, the film must be torn, so it is important to know whether the contents of the container are used or not. It is widely used because it prevents the cap from falling off the container body when handling or transporting the product. However, in this type of conventional shrink packaging, a film formed into a cylindrical shape is wrapped around the cap and a part of the container and then heat-shrinked. Even if steps and other irregularities with respect to the container are formed at appropriate locations, there is a limit to the degree of shrinkage of the shrink film, so there is a drawback that the shrink film is not sufficiently engaged with these irregularities and is easily separated.

The present invention solves this problem.

[Structure of the invention] The structure of the invention will be explained based on drawings showing embodiments. FIG. 1 shows a side view of a truncated cone-shaped container with a cap that is packaged with the shrink molded product of the present invention (before heat shrinkage). A step portion 5 is formed at the boundary 4 between the lower end 2 of the container cap 1 and the container body 3, with the lower end 2 having a larger diameter and the container body near the lower end 2 having a smaller diameter, which increases in diameter upward. ing. The shrink film molded product 6 surrounds the container cap 1, the stepped portion 5, and a part of the upper part of the container main body, and the shrink film molded product 6 surrounds the container cap 1, the stepped portion 5, and a part of the upper part of the container body. Slightly incised slits 7, 7 are provided in position with the base of the slits parallel to the lower end. Also,
FIG. 2 is an enlarged view of the portion indicated by the dashed-dotted circle in FIG.

FIGS. 3 and 4 respectively show the state of the shrink film molded product shown in FIGS. 1 and 2 after being heat-shrinked. In other words, there is a slight incision 7 directed upward.
In step part 5, where the diameter of the cut is enlarged by heat shrinkage and the diameter changes rapidly, the upper part of the cut is slightly cut upward, and the film is Because it is separated into upper and lower parts, has a slight incision toward the top, and has a space below the step, it can contract relatively freely, as shown in 9 in Figure 4. It will then shrink as a shrink piece towards the lower end of the cap. Thus, the shrink film molded product after heat shrinkage is
It is locked with the container cap 1 and is prevented from coming off.

Further, it is preferable that the position of the slit 7, which is slightly cut upward, is located away from the lower end 2 by a length approximately equal to the step of the stepped portion 5. Since both ends of the notch 7 are slightly notched upward as shown in the figure, the shrinkable piece 9 shown in Fig. 4 is more fully contracted, and the shrink film is more securely secured to the container cap. do. Further, the material of the shrink film may be any of the commonly used materials such as vinyl chloride, polyethylene, and polypropylene. and,
The number of small-shaped incisions made slightly upward is determined as appropriate depending on the size of the cap, etc.

[Effects of the invention] Since the present invention has the above-mentioned configuration, even if the cap is shaped like a truncated cone, it is possible to prevent the virgin seal formed by the shrink film that tightly wraps the cap from separating from the cap. can.

[Brief explanation of the drawing]

FIG. 1 is a side view of the shrink film molded product of the present invention before heat shrinkage, and FIG. 2 is an enlarged view of the portion indicated by the dot-dashed circle in FIG. FIGS. 3 and 4 are views corresponding to FIGS. 1 and 2 after heat shrinkage. Explanation of the symbols: 1...Container cap, 2...Lower end, 5...Step, 6...Shrink film molded product, 7...Slightly cut upwards.

Claims (1)

[Claims for Utility Model Registration] (1) A container near the lower end, which is located at the boundary between the lower end of a truncated conical container cap and the container body covered by the container cap, with the lower end having a larger diameter. Shrink film, in which a stepped portion is formed with the main body having a small diameter and the diameter increases upward, and surrounds the container cap, a portion extending over the stepped portion and the container main body, and tightly locks onto the container cap after heat shrinkage. It is a molded product, and at a position immediately below the lower end, there is a slit-shaped notch that is slightly cut upward, and the base of the slit-shaped notch is parallel to the lower end at the appropriate position. The shrink film molded product is characterized in that: (2) The shrink link according to item 1, characterized in that a slight incision directed upward is provided at a position spaced from the lower end by a distance approximately equal to the step of the step. Film molded products.