JPS58216530A - Straw fixture - 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 device for attaching a stow to the outer surface of a paper container for liquid such as milk or juice.

A band-shaped body in which a large number of stores a are housed at predetermined intervals using a synthetic resin film is disclosed in Utility Model Application Publication No. 55-145981 and Japanese Patent Publication No. 55-145981.
6-32207 etc., its structure and manufacturing equipment are described.

Conventionally, when attaching a straw to the outer surface of a paper container using the above-mentioned strip, the strip was cut with a cutter to a length that accommodated one straw, as described in JP-A-54-111980. After that, a method is adopted in which this is adhered to the outer surface of the paper container using an adhesive. However, this method requires a large number of work steps and does not take full advantage of the advantages of the strip.

The inventors of the present invention aimed to press-bond a liquid paper container with a thermoplastic resin layer such as BORIETSUSHIN on not only the inner surface but also the outer surface of the container due to the need for sealing performance and ease of assembly and molding, and developed the method using thermal means. If the cutting of the synthetic resin Fitrem strip containing the straw and the fusing to the outer surface of the paper container are performed at the same time, the work process can be simplified and the installation process can be sped up. As a result of conducting research from this perspective, we have completed the present invention.

That is, the straw attachment device according to the present invention includes an applicator drum that has a large number of slits on one circumferential surface and rotates while holding the strip in this position, and a straw attachment device that has a small number of slits built into the applicator drum. It is equipped with a thermal melting head having thermal elements at predetermined intervals, and a drive device that protrudes the thermal elements from the slits of the applicator drum in a predetermined cycle. It is characterized by heat fusion.

The present invention will be explained below with reference to one drawing. Figure 1 shows
FIG. 2 is a perspective view showing an example of a band-shaped body that accommodates + and -, and the band-shaped body 2 is composed of S)0-1 and a thermoplastic synthetic resin film that accommodates them at predetermined intervals. FIG. 2 is an explanatory diagram showing an example of a straw attachment device. To explain the outline, the strip 2 containing the straw ey = 1 is passed from the straw drum 8 to the tension binding roller 9, and then to the guide roller. It is supplied to the applicator drum 3 while being subject to positional restrictions of 10. The applicator drum 3 rotates in the direction of arrow A while holding the strip 2 on its surface.

This strip-shaped body 2 is fed to the mounting position. On the other hand, the liquid paper container 12 is conveyed by the conveyor 11 in the direction of arrow B to reach the mounting position. In this mounting position, the strip 2 is heated by the heat element 6VC attached to the thermal melting head 5.
-J books are stored 1 (length, M bK) and are thermally melted and simultaneously thermally fused to the outer surface of the liquid paper container 12.

As shown in a perspective view in FIG. 6, the applicator drum 3 according to the present invention has a large number of slits 4 on its surface through which thermal elements 5 can enter and exit.

, FIG. 4 shows another embodiment of this applicator drum 3, which is composed of two bottom plates and a number of rods connecting the peripheral edges of the bottom plates. In this case, the slit 4 means a gap between adjacent a-nodes. The method for holding the strip 2 on the circumferential surface of the applicator drum 3 is as follows: - If the own weight of the strip 2 is sufficient in relation to the installation direction of the applicator drum, no holding means is required; however, if necessary, the applicator A suction means is provided inside the drum 3 to suction and hold the strip 2. In this case, the strip 2 is fed 1. It is desirable to cover the unfilled peripheral side with a suitable backing plate to increase the suction effect.

The thermal fusing head 5 built into the applicator drum 3 has a heating element 6 directed outward of the applicator drum.
has. As this heating element, nichrome wires with a length that crosses the strip 2 in the width direction are usually used, and one wire is placed at intervals of a length that accommodates and holds one straw with respect to the strip 2. However, in order to increase the effect of heat fusion to the liquid paper container @12.

Two or more Nik eyA# may be arranged in each case.

Further, it is also possible to make cuts in advance at the intended cutting positions of the strip 2, heat-sew only the continuous parts, and heat-seal the liquid paper container 12 using these parts.

On the other hand, a cam 7 is in sliding contact with the thermal melting head 5,
The straw attachment operation is performed once per rotation of the cam 70. That is, when the protrusion 7a of the cam 7 presses the thermal melting head 5, the thermal element 5 protrudes from the slit 4 of the applicator drum 3, thermally melts the strip 2, and at the same time thermally fuses it to the liquid paper container 1S12.

Therefore, the timing at which the applicator drum 3 transfers the strip 2 per length that accommodates one stick c1- and the timing at which the cam 701 rotates must completely coincide with the drive device for the thermal melting head 5. In addition to the above-mentioned cam, it is possible to employ various mechanical or electrical mechanisms such as the use of a reciprocating NIth of an electromagnetic coil core.

FIG. 5 is a perspective view showing an example of a liquid paper container to which s)-1- is attached according to the present invention. B) The mounting position and angle of O-1 are arbitrary. When mounting on a small paper container,
For installation, if the paper container is tilted at an angle tJc and hung diagonally on the outer surface of the paper container, the length of the store a- to be installed will be maximized.

As mentioned above, the present invention utilizes the thermal adhesiveness between the thermoplastic resin on the outer surface of the liquid paper container and the thermoplastic resin of the strip that houses the straw, which simplifies the process of attaching the straw. It is possible to improve efficiency.

FIG. 2 is an explanatory diagram showing an example of the straw attachment device according to the present invention, FIGS. 3 and 4 are perspective views showing an example of the applicator drum according to the present invention, and FIG. FIG. 2 is a perspective view showing an example of a liquid paper container with - attached thereto.

DESCRIPTION OF SYMBOLS 1... Storing e--12... Band-shaped body, 3... Applicator drum, 4... Slit, 5... Thermal melting head, 6... Thermal element, 12... Liquid paper container .

Akira/(21 /2

Claims (1)

[Claims] (1) A large number of straws from a thermoplastic synthetic resin film
In an apparatus for attaching a predetermined number of strips on the outer surface of a liquid paper container by supplying a strip containing them at predetermined intervals, the device has a large number of slits on the curved surface and holds the strip on the circumferential surface. A rotating applicator drum, a thermal fusing head that is built into the applicator drum and has at least two thermal elements spaced apart from each other at a predetermined interval, and a drive device that centrally brings out the thermal elements from a slit of the applicator drum in a predetermined cycle. A straw attachment device that heat-fuses a strip to a predetermined length and simultaneously heat-fuses it to the outer surface of a liquid paper container.