JPS5926557B2 - High temperature filling and sealing method for containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for filling and sealing a high-temperature liquid into a container based on paperboard, and in particular, for filling a container having a lined polygonal columnar body with juice, alcohol, etc. The body is filled while being heated to about 90 degrees Celsius, and then a lid material made of aluminum, thermoplastic synthetic resin, or a laminate thereof is adhered and sealed. By pressing uniformly in the center direction, the body is shaped into a rectangular tube before the filling is cooled, and after cooling, the body is formed into an accurate polygonal shape.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.
First, FIG. 1 is a perspective view of the main body of a container C according to the present invention, which consists of a cylindrical body 1 and a bottom 2 with one open end closed, and the body 1 extends in its axial direction. The body part 1 which has the folded joint part 5 and excludes the joint part 5 has several straight ruled lines 3 and an arc-shaped line connecting the ends of the ruled lines 3, approximately parallel to the joint part 5. Ruled lines 4 are provided.

Next, regarding the apparatus used for carrying out the present invention, FIG.
To explain briefly using FIG. 4, there is a container holder 6 having recesses 9 of approximately the same shape and size as the cross-sectional shape of the container C formed into a cylindrical shape with ruled lines, and containers C The same number of pressure rolls □ as the number of surfaces of the body 1 defined by the ruled lines 3 are provided.

The pressure roll 7 is rotatably provided at the upper end of a lever 8 which is rotatably supported by a support portion 12 provided approximately in the middle on the outer circumferential wall of the container holder 6.
At the lower end of the retainer 6, there is an inclined surface 1 provided on the lower outer periphery of the retainer 6.
A roll 11 is provided which abuts an annular vertically movable cam 9 having a diameter of 3. The peripheral wall of the container holder 6 is provided with the same number of openings 14 as the pressure rolls T so that the pressure rolls T can move forward and backward relative to the body 1 of the container C. Now, to explain the method of the present invention in detail, first, a container C having a body 1 provided with ruled lines 3 and 4 is housed in a container holder 6.

At this time, since the cam 9 is located at the lower end, the pressure roll T is in the retreated position, and the body 1 remains cylindrical. Next, when filling with high temperature (approximately 90°C) juice, alcohol, etc. is started, the cam 9 begins to rise by an air cylinder (not shown), and the roll 11 comes into contact with the inclined surface 13 of the cam 9, causing the lever 8 to The upper part of the support part 12 is moved inward (toward the container body 1). As a result, the pressure roll T at the tip of the lever 8 begins to press the area 15 surrounded by the ruled lines 3 and 4 on the body 1 of the container C. This pressing of the portion 15 is continued by the raising of the cam 9 in conjunction with the raising of the container C from the time of filling with the filler until the end of adhesion of the lid (not shown). At this time, as shown in FIG.
Point 15 is a distance a (2 to 3 mm) to the position shown at 15''.
) to form a substantially straight line, forming a polygonal prism-like (heptagonal in this embodiment) body with the ruled line 3 as the ridge line (see FIGS. 5 and 6). Since the present invention has the above-described configuration, if the body is not pressed in advance with a pressure roll as in the past, it is applied to either the area surrounded by the ruled line or the area of the ruled line (edge line) of the body. However, because the uniform suction force acts when the filling is cooled, the container body does not have an accurate polygonal shape, but the press roll makes the container body part 15
During the period from filling to adhesion of the lid material, it is pressed inward with a uniform force to form a diagonal shape before the filling cools down, and when the filling cools, the suction force due to the pressure difference between the inside and outside of the container ,
A large difference occurs in the deformation of the portion 15 and the ruled line (edge line) portion, and the portion 15 becomes flat, making it possible to form an accurate polygonal columnar body.

In addition, according to the method of the present invention, even if suction occurs due to the pressure difference during cooling of the high-temperature filling, the body of the container deforms into a regular shape, so there is no need to make any special arrangements for the lid material, and the filling An ordinary lid (paper, metal, thermoplastic synthetic resin, or a laminate thereof) that does not have a structure that absorbs deformation due to pressure difference during cooling of the object may be used.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of a container body according to the present invention, FIG. 2 is an AN sectional view of the same, and FIG.
Fig. 5 is an explanatory diagram showing the state before the container body is pressed, Figs. 4 and 6 are explanatory diagrams showing the state in which the container body is pressed, and Fig. 7 is an explanatory diagram showing the state before the container body is pressed. A perspective view of the filled container, and FIG. 8 is a cross-sectional view taken along the line B-B''. 1...Body, 2...Bottom, 3, 4...
・・・・Ruled line, 5・・・・Joint part, 6・・・・・・
Container holder, 7... Press roll, 8...
・Lever 9...Cam, 10...Recess, 11...Roll, 12...Support part,
13... Inclined surface, 14... Opening, 15
, 15″... places.

Claims (1)

[Claims] 1. When filling a cylindrical container with ruled lines on the body of the container, the body between the ruled lines is filled from the time the contents are filled into the container until the lid is attached. A method for filling and sealing a container at high temperature, characterized in that the body of the container is shaped into a rectangular tube before the filling material is cooled by uniformly pressing a member toward the center of the horizontal cross section of the container.