JPH021234Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a container for filling and packaging adhesive substances.

(Problems to be Solved by Prior Art and Ideas) When adhesive substances, especially hot melt agents, are heated at high temperatures when being filled and may also be heated when taken out, the container must be heat resistant. Of course, it is necessary to have releasability that allows adhesive substances to be peeled off.

Conventionally, assembled boxes made of paper laminated with heat-resistant polyethylene, polypropylene, or polyethylene terephthalate, coated with silicone resin on the plastic surface, have been used for such applications, but polyethylene and polypropylene Polyethylene terephthalate does not have sufficient heat resistance, and although it does not easily melt when exposed to heat, it does have the property of shrinking when exposed to heat, resulting in disadvantages such as curling of the box. Also, assembled boxes are inefficient and uneconomical in that they require man-hours to assemble the boxes before packaging.

(Means and Effects for Solving Problems) The container of the present invention includes a sheet having a polymethylpentene layer 2 extrusion coated on a base paper 1 shown in FIG. 1, and a silicone resin coating layer 3 provided thereon. The thickness of layer 2 is 15~30μ
The coating amount of layer 3 is preferably about 0.1 to 1 g/m ² . From this sheet, for example, punch out a sheet piece in the shape shown in Figure 2, draw ruled lines on the paper side and fold it along the lines to form the side walls, then fold the four corners as shown in Figure 3 and form the side walls as shown in Figure 4. Glue and configure. The silicone resin coating layer should be on the inside of the box. The opening on the top of the box should be slightly larger than the opening on the bottom. In other words, the lengths b and d of one side forming the upper surface
is set to be slightly longer than the lengths a and c of one side forming the corresponding bottom surface.

The box constructed in this way has a slightly wider top, making it convenient for filling and taking out the contents, and the boxes can be stacked as shown in Figure 5, making it convenient to transport empty boxes without taking up much space. It is.

Therefore, the customer can purchase a box that has been finished so that the converter can fill it right away, and immediately fill and package it, which is extremely advantageous in that it does not require the customer to assemble the box, unlike conventional assembled boxes. It is.

The polymethylpentene layer used in the sheet that makes up the box of this invention does not shrink when heated like polyethylene terephthalate film, so even if it is filled with heated material, such as hot melt resin, the box will not deform. There is no such problem, and it becomes fluid when heated and is suitable for packaging highly viscous objects.

(Example) In the sheet shown in Figure 1, the paper is white paperboard with a basis weight of 350 g/ ^m2 , and only one surface is made of white paper, and the back side (the non-white side) is used. Polymethylpentene is applied to a thickness of about 30 microns by melt extrusion coating, and then silicone resin is applied at 0.4 g/m ² and cured to form a releasable surface. In Fig. 2, b=
110mm, a=95mm, d=200mm, c=180mm, e=
Take the size of 75mm, add ruled lines on the uncoated side as shown in Figure 2, fold it up as shown in Figures 3 and 4, and glue the four corners to the side of the box as shown in Figures 3 and 4.

(Effects) The container of the present invention thus made was filled with 1 kg of hot melt adhesive heated to 170°C, and it was possible to fill the container smoothly without sticking to the inside of the box.

Since there is a silicone resin release layer on the inside of the box, the contents do not stick to the walls of the container when taken out, and all the contents can be used effectively. Since the container is heat resistant, the box could be heated if necessary during removal to increase the fluidity of the contents.

[Brief explanation of the drawing]

Figure 1: A cross-sectional view of a sheet used to manufacture the container of the present invention; Figures 1 and 2 in Figure 2: A diagram showing an example of punching and ruled lines from the sheet used to manufacture the container; Figure 3:
Figures and Figure 4: Perspective view showing an example of manufacturing a container, Figure 5
Figure: A sectional view showing a state in which the containers of the present invention are stacked. Explanation of symbols and symbols in the drawings indicate the following items. 1...Base paper, 2...Polymethylpentene layer,
3... Silicone resin coating layer, a to e... Each side defining the bottom, top, and side surfaces of the container.

Claims (1)

[Scope of utility model registration request] It was made of a sheet with a silicone resin coating layer on top of a polymethylpentene layer melt-coated on one side of the paper.The side walls were folded up with the silicone resin layer on the inside, and the four corners were bent to the outside of the box and fixed with adhesive. A paper container for adhesive materials consisting of a box with an opening slightly larger than the bottom.