JPS6227140A - Synthetic resin packaging material and manufacture thereof - 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 <Industrial Application Field> The present invention relates to a synthetic resin packaging material in which a top sheet and a honeycomb-structured core material are integrated, and a method for manufacturing the same.

<Prior Art> In general, packages used to protect products and transport them to sales destinations are often made of corrugated poles made of paper material. Although a package formed from such paper film poles is inexpensive, it is insufficient as an aesthetically pleasing case.

For this reason, a known synthetic resin packaging material, which is made by continuously extruding beautifully colored synthetic resin and has a corrugated pole-like cross section as shown in FIG. 7, has been used for packaging.

<Problems to be Solved by the Invention> However, such synthetic resin packaging materials do not have sufficient bending strength in the direction perpendicular to the extrusion direction during molding, and also have a large wall thickness that increases the weight. There was a problem with the increase in

Furthermore, changing the dimensions of the packaging material requires a mold corresponding to the dimension, and there is a problem in that the mold must be replaced each time and T: molding is performed.

First Step for Solving the Problems This invention was made to solve the problems listed in item I. The synthetic resin packaging material of the first invention consists of two synthetic resin top sheets and these. A core material is interposed between synthetic resin surface sheets and integrated with these synthetic resin surface sheets by adhesion, and the L core material is made of a large number of synthetic resin sheets and is folded along the crease lines provided in the synthetic resin sheets. Moreover, they are bonded at the bonded portion to form a honeycomb structure having continuous hexagonal through holes.

Further, the method for manufacturing a synthetic resin packaging material according to the second invention provides a plurality of ascending fold lines in each of a plurality of synthetic resin sheets, and a predetermined adjacent 1-fold line [between the 1 lines]. A large number of the above synthetic resin sheets are stacked together as adhesive surfaces, and after adhering the adhesive surfaces facing each other vertically, they are cut at predetermined intervals, and then the cut rod-shaped stacked sheets are cut downward. A honeycomb-shaped core material having continuous hexagonal through-holes is formed by expanding, and synthetic resin top sheets are adhered to both sides of the core material.

<Function> The thickness of the synthetic resin packaging material of the present invention can be freely adjusted by the thickness of the synthetic resin top sheet and the cutting interval of the bar-shaped stacked sheets. Moreover, the dimensions in the vertical and horizontal directions can be freely set according to the dimensions of the synthetic resin sheet material.

The core material is a fold 11 provided in the synthetic resin sheet.
A large number of consecutive 1-
It is formed into a honeycomb structure with hexagons.

In addition, the honeycomb structure is maintained by adhering the two synthetic resin surface sheets that form the surface layer, and the core material of this honeycomb structure increases the bending strength in each direction and evens out the bending strength. <Embodiment> An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a partially enlarged perspective view of an embodiment of the synthetic resin packaging material according to the present invention.

Synthetic resin top sheet 2 and synthetic resin sheets 5a, 5b
In the embodiment, it is made of a hard transparent vinyl chloride sheet material. A honeycomb-structured core material 4 is interposed between the two synthetic resin surface sheets 2, which is formed by bending and stacking a large number of synthetic resin sheets 5 and bonding them together. 4 and the synthetic resin top sheet 2 are bonded and integrated to form a synthetic resin packaging material 1.

The synthetic resin packaging material having the above structure is formed, for example, as follows.

That is, first, the synthetic resin sheets 5a and 5b are cut into a predetermined size. This synthetic resin sheet) 5a.

5b, multiple fold lines are inserted in parallel at intervals equal to the length of one side of the hexagon of the honeycomb structure of the core material 4.

These fold lines consist of a mountain fold line 6 placed on one side of the synthetic resin sheets 5a, 5b, and a valley fold line 8 placed on the other side, and two mountain fold lines 6 are provided adjacently, and then Two valley fold lines 8 are provided, and two mountain fold lines 6 are provided alternately. Then, adhesive surfaces 7.9 for adhesion are formed between the adjacent mountain fold lines 6.6 and valley fold lines 8.8, respectively (see Figure 2!F!A).

Thereafter, the synthetic resin sheet 5a is cut along the outermost mountain fold lines 6, and the synthetic resin sheet 1-5b is cut along the outermost valley fold lines 8.

In this way, the predetermined mountain fold line 6. A large number of synthetic resin sheets 5a are provided with valley fold lines 8.

5b are stacked alternately as shown in FIG. 3, in this case, the adhesive surface 9 of the upper synthetic resin sheet 5a or 5b and the adhesive part of the lower synthetic resin sheet 5b or 5a. 7 are facing each other, and the adhesive is applied to the adhesive surface and stacked, and the adhesive part 10 is formed and bonded (
(See Figure 4).

After applying an appropriate load and drying the adhesive to completely adhere the stacked and glued sheets 11, the stacked sheets 11 are glued together at predetermined intervals (this width is the thickness of the core material) as shown in Figure 6. It is cut into transverse shapes to form bar-shaped stacked sheets 12.

Then, the rod-shaped stacked sheet 12 is expanded by being pulled in the vertical direction shown by the two-dot chain line in FIG. Unicomb core material 4 is formed. That is, when the rod-shaped stacked sheet 12 is expanded, each synthetic resin sheet) 5a, 5b
A folded portion can be easily formed by the fold lines 6 and 8 placed in the fold line 6, and the folded portion can be reliably folded at these points.

The core material 4 configured in this manner has two synthetic resin surface sheets 2 adhered to both sides thereof, that is, by the adhesive portion 3 so as to close the through holes 13, so that the shape of the honeycomb structure is maintained. Thus, the synthetic resin packaging material 1 is completed.

It should be noted that the present invention is not limited to the structure of the above-described embodiment, and for example, the synthetic resin surface sheet and the synthetic resin sheet may be made of a thin plate material made of hard resin 1M and wood 1M such as polycarbonate.

Further, the color tone of the sheet may be any colorless, two-colored, transparent or opaque color tone, and it goes without saying that any combination thereof can be set.

Further, the fold line may be a crease line carved into the sheet in the form of a wedge-shaped groove, or may be embossed into a U-shape or 7-shape. 〉 As explained above, the synthetic resin packaging material of the present invention has a core material having a nicam structure, which is folded along the crease lines provided in a large number of synthetic resin sheets, and is bonded at the adhesive part to have a continuous hexagonal shape. and combine Ii+7. on both sides of this core material. Since the resin surface sheet is adhered to maintain the honeycomb structure, it can be easily and reliably bent along the crease line, and an orderly and continuous hexagonal honeycomb-shaped core material can be formed.

Furthermore, the core material having the honeycomb structure increases the bending strength in each direction, and also makes it possible to equalize the bending strength.

- In addition, by constructing each sheet with a transparent sheet member, the honeycomb structure has transparency, and the packaged product can be seen from outside the package, making it an unprecedented packaging material that can be beautifully decorated. It can exhibit packaging effects.

Furthermore, by appropriately setting the wall thickness of each sheet member,
A packaging material that is lightweight and has high bending strength can be obtained. In addition, the size and thickness of the packaging material can be freely set without the need for a mold or the like, and mass production can be performed using simple production equipment, which has extremely great effects.

[Brief explanation of the drawing]

FIG. 1 is a partial enlarged view showing a partially cut away synthetic resin packaging material according to an embodiment of the present invention, FIG. 2 is an enlarged end view of the same synthetic resin sheet, and FIG. FIG. 4 is an enlarged end view showing the state in which the sheets are adhered by weight, FIG. 5 is an enlarged end view of the core, FIG. 6 is a perspective view showing the cut state of the stacked sheets,
The figure is an enlarged sectional view of a conventional synthetic resin packaging material. DESCRIPTION OF SYMBOLS 1... Synthetic resin packaging material, 2... Synthetic resin top sheet, 4... Heart material, 5a, 5b... Synthetic resin sheet, 6... Mountain fold line, 7.9... Adhesive surface , 8... Valley fold line, 10... Adhesive part, 12... Rod-shaped intussusception sheet. 13...Through hole. Figure 1 Figure 6 Figure 7

Claims (2)

[Claims] (1) Comprising two synthetic resin surface sheets and a core material interposed between these synthetic resin surface sheets and integrated with these synthetic resin surface sheets by adhesion, the core material consisting of a large number of synthetic resin sheets. 1. A synthetic resin packaging material characterized in that it is bent along a crease line provided in a synthetic resin sheet and bonded at an adhesive portion thereof to form a honeycomb structure having continuous hexagonal through holes. (2) A large number of parallel fold lines are provided in each of a large number of synthetic resin sheets, and a large number of synthetic resin sheets are stacked with predetermined adjacent fold lines serving as adhesive surfaces, and the upper and lower After adhering the adhesive surfaces facing each other, the sheets are cut at predetermined intervals, and then the cut rod-shaped stacked sheets are stretched in the vertical direction to form a honeycomb-shaped core material having continuous hexagonal through holes. A method for producing a synthetic resin packaging material, which comprises bonding synthetic resin top sheets to both sides of a core material.