JPS63295247A - Wraparound case - Google Patents

Abstract

PURPOSE:To manufacture a comparatively large wraparound case by meandering corrugated channel lines in the form of plane waves, making the vibration rate, the meander overlap rate and meandering rate a given value W1 or more, bonding a flat plate liner at least on one surface and forming a reinforced composite corrugated material. CONSTITUTION:Corrugated channel lines are meandered in the form of plane waves, and the vibrating line H/L (L: length of wave H: vibration) of respective section waves of the corrugated channel lines is made 0.2 or more, while the meander overlap rate D/L (D: vibration of plane surface meandering waves) is made 0.5 or more, and respective meandering rates D/N (N: plane meandering wave length) of the corrugated channel lines in the plane surface form 0.15 or more to form a corrugated core material, and a flat plate liner is bonded on at least one surface of the corrugated material to form a reinforced composite corrugated material. Said reinforced composite corrugated material is cut into given forms and folded to make a wraparound case. On an unfolded sheet 15, corrugated channel lines 13 are provided in the meandering form along the longitudinal or lateral directions and the case is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wrap-around case manufactured by using a composite corrugated body formed by adhering a flat liner material to a corrugated core body.

(Prior art) A conventional composite corrugate body is formed by arranging a large number of corrugate rows in a straight plane in a plane by forming vertical peaks and valleys alternately on a sheet material to form a corrugate core. death,
Single-sided corrugated cardboard in which a flat liner is adhered to one side of a corrugated core or double-sided corrugated cardboard in which flat liners are adhered to both sides of a corrugated core are known.

When comparing single-sided cardboard and double-sided cardboard, single-sided cardboard is definitely more cost-effective, so it is conceivable to use single-sided cardboard to create a wraparound case.

Then, using this single-sided cardboard 1, as shown in FIG. 11(B).
In order to manufacture a wrap-around case 5 as shown in FIG. is attached and supplied to our own VJ box making machine to make boxes.

(Problems to be solved by the invention) However, in the conventional single-sided cardboard, as shown in Fig. 11 (
The in-plane compressive strength in the χ direction perpendicular to the corrugated rows 2 of A>, that is, in the cross-grain direction of the cardboard, becomes extremely low. Therefore, if a wraparound case is formed by arranging the corrugated rows 2 along the longitudinal direction of the case, as shown in FIG. Because it is a case,
Normally, the material must be cut as shown in FIG. 11 (△) and boxed as shown in FIG. 11 ([3), and the ta-cutting direction of single-sided cardboard is limited. Furthermore, if wraparound cases are manufactured as shown in Figure 11 (B), if they are stacked vertically in the χ direction, the case will be extremely weak against the loading load, so there will be restrictions on the loading direction. There was a problem that I was asked to accept.

In addition, in conventional single-sided cardboard, the out-of-plane bending strength in the vertical plane direction perpendicular to the χ direction in Fig. 10 is extremely low and it is easy to bend, so the dimension in the χ direction in Fig. 11 (B) is extended beyond the predetermined angle. It was not practical to create a wrap-around case.

As mentioned above, since the in-plane compressive strength and the out-of-plane bending strength are low, in the conventional wraparound case, the flap piece (IV>(V)) at the opening may curve.
It is easy to bend and get damaged.

Furthermore, due to the low out-of-plane compressive strength of conventional single-sided cardboard, it is not possible to obtain sufficient warming properties on each side of the case. It was completely unsuitable as an around case.

In addition, in the conventional single-sided cardboard 1, the joint between the corrugated rows 2-2 and the flat liner 4 is in the form of parallel lines along the peaks of the corrugated rows 2-2. If the part matches the parallel line part, it will be easy to bend along that part, but with other ruled lines, if the part is shifted from the parallel line part, it will not be possible to fold it accurately along the ruled line. The song was difficult.

In other words, in conventional single-sided corrugated cardboard, the addition of lines in the longitudinal direction and y direction of the corrugated rows makes it difficult to bend the parts accurately, and the judicial precision of the case is significantly impaired during the box-making process. This resulted in a high-cost structure, such as applying a double-sided liner only to the corresponding area around the area or reinforcing it with a double core.

In addition, conventional single-sided cardboard tends to warp and deform.
Striped grooves were formed on the flat plate liner surface, resulting in poor printability, and was particularly unsuitable for precision printing of PoS bars and the like.

Furthermore, as is clear from Fig. 11 (A), the unfolded sheet of single-sided cardboard for forming the wraparound case must be cut so that the direction of the corrugated rows is the longitudinal direction. It was pointed out that the problem was that cutting efficiency was reduced due to the tendency for cutting to occur easily.

The present invention was made in view of the above-mentioned problems.
The purpose is to have sufficient strength in all of the in-plane compressive strength, out-of-plane bending strength, and out-of-plane compressive strength, so that it can be cut in any direction of the corrugated rows without being restricted by the arrangement direction of the corrugated rows. Moreover, it has great strength against loads in any direction, and can be made into elongated boxes. Lined boxes allow accurate dimensional opening of the parts, and printing To provide a wrap-around case that has excellent suitability and can avoid improving cutting efficiency.

(Means for Solving the Problems) In order to achieve the above object, in the wraparound case according to the present invention, corrugated rows are formed by alternately forming vertical peaks and valleys on the sheet material. Together, the corrugated rows are meandered into a planar waveform, and the amplitude rate of each cross-sectional wave of the corrugated rows is 1''/L (L: wavelength, I-1:
amplitude) is 0.2 or more, the meandering polymerization rate D/L (D: amplitude of a plane meandering wave) between the corrugated rows in a planar shape is 0.5 or more, and the corrugate rows in a planar shape are A corrugated core is formed with a meandering rate D/N (N: wavelength of a plane meandering wave) of 0.15 or more, and a flat plate liner is adhered to at least one side of the corrugated core to form a reinforced composite corrugated body. and adding ruled lines for forming a wraparound case to the composite corrugated body,
The composite corrugated body is formed into a box along the ruled lines.

(Embodiments) Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an example of a single-sided reinforced composite corrugated case 1o constituting the wraparound case according to the present invention, which is composed of a corrugated core 11 and a flat liner 12. This corrugate core body 11 is formed by forming corrugate rows 13 in which peaks M and valleys V are vertically applied alternately in the χ direction, and these corrugate rows 13 are made to meander in a waveform in the y direction on a plane. The columns are parallel to each other. Then, the flat plate liner 12 is connected to the peak M of this corrugated row 13.
A3 is integrally bonded to the corrugated row 13.

The shape of the corrugated rows 13 of this corrugated core body 11 is determined by the amplitude ratio H/L and meandering polymerization ratio D/L in FIG.
and meandering rate D/N.

Here, the amplitude rate) -1/L means that the corrugated row 13 is the first
Amplitude 1 of the cross-sectional wave cut along the vertical plane in the χ direction in the figure
Figure 2 (A) to (F) shows the relationship between
The graph shows the amplitude ratio when L is varied while keeping `` constant. As is clear from this figure, as the amplitude rate increases, the angle θ between the cross-sectional wave and its base gradually increases, and as a result, out-of-plane compression is applied vertically downward from the apex of the cross-sectional wave. It can be said that the strength against force increases in proportion to the angle θ. And l-1/
When L is too small, not only the out-of-plane compressive strength is small, but also the distance between adjacent corrugated rows becomes large, and the number of corrugated rows included in a corrugated core of a predetermined area also decreases. Therefore, the practical range is H/L≧0.2.

As shown in FIGS. 1 and 3, the meandering polymerization rate D/, L is t when the rugate row is viewed in plan.
The relationship between the amplitude of each corrugated strip and the wave quality of the above-mentioned cross-sectional waves is shown.

Here, FIG. 3 (A ) to (E). These figures <A) to (E) show the corrugated rows in plan, and the corrugated rows 13a adjacent to each other in the χ direction,
The top M11M2 of 13b is shown in a meandering solid line, and between this, the valley bottom ■ of both rows is shown as a dotted line, and S2 is the valley bottom ■
S3 is the upper tangent line of , S3 is the central transverse line of the valley bottom ■, and B is the bottom surface of the single-sided reinforced composite corrugated body 10.

When D/L-0,4 in FIG. 3(A), at the cross-sectional position along line S, only the top of the corrugated strip 13a has the wavelength N of the corrugated strip, as shown in FIG. 3(A1). They are joined to the flat plate liner 12 at equal intervals, and the entire structure is raised from the bottom surface B of the composite corrugated body. On the other hand, at the cross-sectional position along line 32, Figure 3 (A2
), the corrugated strips 13a have valley bottoms V at equal intervals with the wavelength N and are on the same level as the bottom surface B of the composite corrugated body, but the entire corrugated strips 13a are separated from the flat plate liner 12.

In addition, at the cross-sectional position along S3, as shown in FIG. 3 (A3), the center portions of both corrugated strips 13a and 13b are at the same level as the bottom surface B of the composite corrugated body with an interval of 1/2 of the wavelength N. However, the entire portion is largely separated from the flat liner 12 as in the case of the cross-sectional position along the Sz line.

In this way, when D/L-0, 4, when cutting in the y direction at any position perpendicular to the χ direction, the corrugated strip at that cutting position is floating above the bottom surface B of the composite gully gate body or is a flat plate. Separated from liner 12. Such a condition always occurs when D/L<0.5.

Also, when the cross sections (A1), (A2), and (A3) of the single-sided reinforced composite corrugated body with D/L<0.5 are viewed as a truss structure, the part corresponding to the web of the truss is the composite corrugated body. Since there is no part that extends over the entire wall thickness (T), the bending strength in the vertical plane direction perpendicular to the χ direction is low.
It has a truss structure.

Next, when D/L=0.5, as shown in FIG. 3 ([3), the S line and the 82 line overlap, and at the cross-sectional position along the lines S4 and 82, the third As shown in figure ([31),
The corrugated strips 13a are arranged on the flat liner 1 at equal intervals with the wavelength N.
2 and is at the same level as the bottom surface of the composite corrugated body 10.

In this way, when D/L=0.5, D/L=0.
4, compared with other cases where D/L<0.5, S,
・When the cross section along 5211 is viewed as a truss structure, the structure itself is qualitatively different from the case where D/ is 0.5 because the web of the truss extends throughout the thickness of the composite corrugated body. Second truss M4. i, and it can be said that the out-of-plane bending strength in the y direction increases significantly as a whole. In other words, in the second truss structure, the angle of inclination of the weave 1 of the truss is steep, and the number of triangular truss units composed of the web material (line segment of the inclined corrugated body) and the flange material (horizontal flat liner) is increased. The number is rapidly increasing.

Then, if the second truss structure is further strengthened without changing the structure, D/L exceeds 0.5, for example, D/L=
There is one formed so that it is 0.8, and it is C1 in Figure 3.
) and (C2), when looking at the unit length in the cross-sectional y direction between line S and line 82, there is a difference between the part where the corrugated strip 13a joins to the flat liner 12 and the bottom surface of the composite corrugated body. The number of locations that are at the same level increases, the density of the truss structure further increases, and the out-of-plane bending strength increases between the SI line and the 82 line, as well as between the S'1 line and the S=p line. However, in the section between the Si line and the S'1 line (not including those on these lines), as is clear from Figure 3 (C3) showing the cross-sectional position along line 83, there are All of the corrugated strips 13a and 13b are separated from the flat liner 12.

Furthermore, when D/L=1.0, as shown in FIG. 3(D), S+Iil and S3I! 11, and the cross-sectional position along this line is corrugated strip 13a.

13b are joined to the flat plate liner 12 at intervals of 1/2 of the wavelength N and extend in a waveform to the bottom level B of the composite corrugated body. Therefore, in the state of D/L=1.0, the section shown by line 81 to line S-7 in FIG. 13a and 13b are joined to the flat plate liner 12 at an interval sufficiently smaller than the wavelength N, and extend to the bottom level of the composite corrugated body, and when viewed as a truss structure, there are arbitrary directions orthogonal to the χ direction. Since the truss extends through the entire wall thickness of the composite corrugated body at the position, O15≦D/L<1.0
The structure has shifted to the third truss structure, which has undergone further qualitative changes compared to the case of , and the maximum out-of-plane bending strength is 0.5≦D/L.
This is a further increase compared to the case of <1.0. That is, the web inclination angle of the unit triangular truss is steeper than that of the second truss structure, and the flat plate liner 1
2 or the bottom level B of the composite corrugated body
The number of points reached increases, and the number of triangular truss units made of web members and seven-lunge members further increases.

Furthermore, if the quality of the third truss structure is not changed and is further strengthened, D/L exceeds 1.0, for example, 1.2.
In this case, as shown in FIGS. 3 (El) and (E2), there is a gap between the flat liner 12 and the composite corrugated body at any cross-sectional position perpendicular to the χ direction. The crest of the waveform extending to D/L=1.0 is sharper than that when D/L=1.0, that is, the web inclination angle of the unit triangular truss is even steeper, and the flat plate liner 12
The joint part with the bottom of the composite Korgu 1 and the bell B
The number of locations where the bending angle is reached increases, and the maximum out-of-plane bending strength further increases. This tendency is considered to increase proportionally as D/L increases.

The relationship between the above meandering polymerization rate D/L and the maximum out-of-plane bending stress index M is expressed as the amplitude ratio (+-1/L= 0.1. 0.2. 0
．． 3. 0.4. 0,5. If 0.6) is used as a parameter constant and the graph is not shown, the result will be as shown in FIG. That is, D/
In the case of L<0.5, each corrugated strip is separated from the flat plate liner 12 in the y-direction cross section at an arbitrary position in FIG.
), the first truss structure has a relatively small out-of-plane bending strength, but as D/L approaches 0.5, it gradually increases. When D/L=0.5, there is a part in the y-direction cross section of the corrugated strip that joins to the flat liner and is at the same level as the bottom surface of the composite corrugated body, compared to the case when D/L<0.5. Then, there is a sudden transition to a qualitatively different second truss structure, which causes the rate of increase in out-of-plane bending strength to be even greater than before. D
/Llfi0.5, the χ-direction section of the y-direction cross section (S, ~ S2 in Figure 3 (C) between S' and S2)
Since the number of structurally advantageous triangular truss units gradually increases in The maximum bending stress index increases. When D/L becomes 1.0, the corrugated strip joins the flat liner and extends to the bottom level of the composite corrugated body at any position in the y-direction cross section, so here it becomes 0.
．． Compared to the case of 5≦D/L<1.0, there is a sudden transition again to the third truss structure, and the out-of-plane bending strength becomes even greater.

Then, as D/L increases beyond 1.0,
As the number of locations where the corrugated strip joins the flat liner and the number of locations where it extends to the bottom of the composite corrugated body increases,
This results in a steeper slope with a larger rate of rise than in the case of D/L<0.5, resulting in an increase in the maximum bending stress index.

As is clear from the graph in FIG. 4 above, the preferred range for obtaining large out-of-plane bending strength is D/L≧0.5.
The most preferable range is D/L≧1.0. As mentioned above, the amplitude rate 1''/L is 0.2
Since the above is a preferable range, the preferable range of the present invention that satisfies both conditions is D/L≧0.5. It can be said that H/L>0.2, which is within the range shown by diagonal lines.

Next, when looking at the meandering rate D/N, which is the third element that defines the shape of the corrugate rows 13 constituting the corrugate core body 11 according to the present invention, this meandering rate D/N defines the shape of each corrugate row in a plane. It shows the relationship between the apparent amplitude and the wavelength N. As is clear from Figure 5, when N is constant, D/
As N increases, the line to Corrugee 1 becomes deeper and more meandering.

Here, when looking at the angle α formed by each of the corrugated strips (A) to (D) with the horizontal line in the y direction at the maximum inclination position of the meandering wave, as D/N increases, α increases, and this meandering portion , the component in the χ direction gradually increases.

This corresponds to bending stress in the direction perpendicular to the χ direction,
A larger D/N means greater strength, and in practice, if D/N>0.15, a large maximum bending strength can be obtained in the range of D/L≧0.5. When this relationship is shown in the graph of FIG. 6, the diagonally shaded curved portion represents the preferred meandering rate D/N of the corrugated core 11 of the present invention.
It can be said that the meandering polymerization rate is within the range of D/L.

For the above reasons, the corrugated core used in the present invention preferably has an amplitude ratio H/L>0.2° and a meandering polymerization ratio D.
/L≧0.5. By setting the meandering rate D/N>0°15,
More preferably H/L>0.

2. D/L≧1.0. The D/N should be greater than 0.15.

Next, the single-sided reinforced composite corrugate body according to the present invention obtained as described above (1-1/L=0.5.D/L=1.
0. D/N=0.3) as shown in conventional single-sided cardboard (+-1/L=0) as shown in FIG.

5) and strength was compared.

Table 1 shows the test results for in-plane compressive strength.

As is clear from Table 1, when comparing the composite corrugated body used in the present invention and conventional single-sided cardboard, the in-plane compressive strength in the y direction is almost the same for both, but in the χ direction, It is clear that the composite corrugated body has about three times the strength of the conventional one.

Table 2 shows the test results for out-of-plane compressive strength.
It is clear from this table that the single-sided reinforced composite corrugated body used in the present invention has an out-of-plane compressive strength about 1.7 times that of conventional single-sided cardboard.

Table 3 shows the test results for the out-of-plane bending strength in the plane direction perpendicular to the χ direction in FIGS. It is clear that it has a bending strength about 20 times greater than that of cardboard.

Table 1 In-plane compressive strength test results Test method Silent saw test using a column crush tester 2nd surface Out-of-plane compressive strength test results Test method Static loading test using a column crush tester 3rd surface Out-of-plane bending strength Test results Test method Static sawing test using a two-point support bending tester As shown above, the single-sided reinforced composite corrugated body of the present invention is significantly superior to conventional single-sided cardboard in various structural strength performances. I can say it.

The wraparound case according to the present invention is obtained by cutting a single-sided reinforced polymeric corrugate body having many excellent properties as described above into a predetermined shape and bending it.

FIG. 7(A) shows a spread sheet 15 for obtaining a wrap-around case according to the first embodiment of the present invention, and in this spread sheet 15, the corrugated rows 13 are arranged in a meandering shape along the longitudinal direction of the king. A flat liner material 12 is bonded to one side of the corrugated core 11 so that the corrugated core 11 is located on the inner surface of the case. Note that the shape, ruled line positions, etc. of this unfolded sheet are the same as those of the unfolded sheet used when creating a conventional wraparound case. When this unfolded sheet is fed into the vJ box making machine, it is folded along the dotted lines, the flaps with the same symbol are glued together, and the front flap piece ■ is attached to the rear edge sheet part ■. By adhering to the inner or outer surface, a wraparound case 16 as shown in FIG. 7(B) is obtained.

FIG. 8(A) shows a spread sheet 15a for obtaining a wraparound case according to a second embodiment of the present invention. In this spread sheet, the longitudinal direction of the corrugated rows 13 extends in the lateral direction of the spread sheet 15a, and the configuration of the bar is the same as that of the first embodiment.

In the first and second embodiments described above, the flat liner material 12 is bonded so as to be located on the outer surface of the box, but this is done in consideration of the convenience of applying a middle layer to the surface. If necessary, a flat liner material may be located on the inner surface.

Further, in the above embodiment, only the case where the corrugated rows extend along the longitudinal direction or the lateral direction of the unfolded sheet was explained, but the corrugated rows can be inclined at any angle with respect to the longitudinal direction of the unfolded sheet. It may be formed or cut in the same state.

Next, the wrap-around case according to the first embodiment of the present invention (FIG. 7 (B)) and the conventional wrap-around case (K18O-8CP125) shown in FIG. 11 (B) are shown in FIG. Table 4 shows the out-of-plane compressive strengths in the three directions obtained as a result.

Table 4 Results of 3-direction out-of-plane compressive strength test As is clear from the test results, when comparing the product of the present invention and the conventional product, there is no significant difference in the I-I[[ direction, but 1 in the IF-IVh direction. .5 times, about 2 in the V-V1 direction
A significant improvement in the out-of-plane compressive strength was seen. This is because the in-plane compressive strength in the ■-IV direction on each wall surface of V and VI and the in-plane compressive strength in the V-V1 direction on each wall surface of Il and IV were significantly improved.

It is clear that the out-of-plane compressive strength of each body, that is, the cushioning performance, which is strongly required for wrap-around cases, is improved by about 1.7 times with the product of the present invention compared to the conventional product, as shown in Table 2 above. It is.

In addition, in the above embodiment, a wraparound case using a single-sided reinforced composite corrugated body with a flat plate liner bonded to one side of a corrugated core body was explained, but a double-sided reinforced composite case with flat plate liners bonded to both sides of this corrugated core body was explained. Even when a wrap-around case is formed using a corrugated body, the relationship between the single-sided cardboard and the single-sided reinforced composite corrugated body in the above-mentioned implementation table is the same as when the wrap-around case is formed using conventional double-sided cardboard. It has excellent effects in a relative relationship.

The material of the reinforced composite full gate body according to the present invention is paper or paper-based material, and it may be a single material of various papers or a laminated composite of various papers and films made of various non-paper materials. There are various other processed papers coated with, impregnated with, or attached with various cellulose or non-cellulose materials, and suitable combinations of the above-mentioned materials are also effective in the present invention.

(Effects) As described above, the wraparound case according to the present invention is a corrugated case in which the corrugated rows are formed by alternately applying peaks and valleys in the vertical direction, and the corrugated rows are meandered in a plane. Because a core body is used, the manufactured wraparound case has large compressive strength in the front and rear and left and right directions due to the excellent in-plane compressive strength, vertical out-of-plane compressive strength, and out-of-plane bending strength of the corrugated core itself. It has a buffering performance that protects the contents against external impacts, and the flap piece at the opening has high bending strength, so it is sufficiently protected against bending, curving, breakage, etc.

In particular, the single-sided reinforced composite corrugated body used in the present invention has extremely high in-plane compressive strength in the χ direction compared to conventional single-sided cardboard, and has a strength equal to or higher than the in-plane compressive strength in the y-direction. A spread sheet can be obtained by cutting the corrugated rows in any direction, and a wraparound case having sufficient strength in all surface directions can be manufactured.

The fact that the above corrugated rows can be cut in any direction means that a single-sided reinforced composite corrugated body can be manufactured continuously at the most economical maximum width, and the unfolded sheet body can be cut vertically and horizontally within that maximum width. This means that it is possible to combine and cut the pieces into the smallest scrap, improving width efficiency and, as a result, achieving high productivity.

In addition, since the core material that makes up the conventional wraparound case is made up of parallel straight corrugated strips in only one direction (the y direction), it tends to warp and deform when it is in the form of a deployable sheet. However, in the case of the wrap-around case of the present invention, corrugated cores are formed with corrugations in the χ and y directions, so that they can easily break down in the form of an expandable sheet. No warping or deformation occurs at all, and no shape distortion occurs in the case body after the case is manufactured.

In addition, because the core material and flat liner material that make up conventional wraparound cases are laminated in parallel straight lines, the lamination density is low, and the striped uneven surface is created by the laminated and non-laminated areas. It was easy to form and had poor printability. In contrast,
In the case of the wraparound case of the present invention, the bonding between the Lugut core and the flat sheet I-material is on meandering parallel curves, which increases the bonding density and prevents warping and deformation as described above. It prevents the occurrence of striped uneven surfaces, maintains the flatness of each surface of the case, and greatly improves suitability for precision printing of POS bars, etc.

Furthermore, in the present invention, since the bonding portion between the corrugated core and the flat liner material is on a meandering curve, when a ruled line is provided along the longitudinal direction of the corrugated rows, in many cases, the ruled line is Since it passes through the joints intermittently, the ruled line can be folded reliably and precisely. In particular, when the meandering polymerization rate D/L≧1, even if the ruled line is placed at an arbitrary position, it always intersects the corrugated rows at multiple locations, so that the ruled line bending becomes more precise.

In addition, in the wraparound case of the present invention, there are cases in which the corrugated core is provided on the inner surface and cases in which the corrugated core is provided on the outer surface.In particular, in the case of the 11η case, the reinforced full gate is protected against impacts from outside the case. It prevents the sheet from being damaged and has excellent printing suitability for the outer surface of the case.On the other hand, in the case of the latter case, this case? ! ! When multiple containers are loaded and transported or reloaded using a forklift, etc., the meandering corrugated rows on the outer surface of each vertically or horizontally adjacent case engage with phase U, working to sufficiently suppress slippage in both the χ and y directions. Therefore, when using a wrap-around case that prevents cargo from collapsing and at the same time uses gravity to move from top to bottom on a smooth chute, it is possible to provide a bottom surface with excellent sliding properties.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view showing a partially broken flat liner material of a composite corrugated body used in the present invention, and FIGS.
E) is a cross-sectional shape of a rugate strip that constitutes a composite corrugate body, and is a diagram showing the relationship between its wavelength and its wave height, and Figures 3 (A) to (E) are rugate strips that constitute a composite corrugate body. Fig. 4 shows the relationship between the meandering polymerization rate, amplitude rate, and maximum out-of-plane bending strength index. Graphs shown in Figures 5 (A) to (D
> is a graph showing the meandering rate of the corrugated strips constituting the composite corrugated body, Figure 6 is a graph showing the relationship between meandering polymerization rate, amplitude rate, and maximum out-of-plane bending strength index, Figure 7 (A)
and (B) are respectively a developed sheet diagram and a box manufacturing diagram of a wraparound case according to a first embodiment of the present invention, and FIGS. 8(A) and (B) are respectively a diagram of a wraparound case according to a second embodiment of the present invention. FIG. 9 is an explanatory diagram showing the direction of force applied when the wraparound case of the present invention is subjected to a static force test, and FIG. 10 is a diagram of the conventional wraparound case. FIGS. 11(A) to 11(C) are a partially cutaway partial perspective view of a flat cardboard sheet made of single-sided cardboard, and FIGS. 11(A) to 11(C) are an exploded sheet view and a box manufacturing view of a conventional wraparound case, respectively. 10... Composite corrugated body 11... Corrugated core body 12... Flat liner material 13... Corrugated strip 15... Expanded sheet 16. ...Wraparound case M...
・・・Top V・・・・・・Bottom Patent Applicant Hiroshi Ichikawa Daido Tomokudo Co., Ltd. Seibu Hyakushitsu Store Representative Patent Attorney - Iro Kano Sukedo
Patent Attorney Matsumoto 7W Li No. 12 Figure 2 (A) (B) (C) (D) (F) Figure 3 D/L-0,4 5°8 Figure 3%-0,5 Figure 3 D /L Tomi Q8 Fig. 3 I) /L Tomi IO Fig. 3 DL=L2 Fig. 4 Fig. 115 (D) (E) (F) Fig. 6 Fig. 7 (A) (B) R Fig. 8 ( B) Figure 9 Figure 11 Procedural 11 Official Book (Method) % Formula % 1. Indication of the case 1988 Patent Application No. 132592 2. Name of the invention Wraparound case 3. Person making the amendment Relationship with the case Patent applicant address: Mr. Watanabe Building, 3-19-11 Takada, Toshima-ku, Tokyo
Name: Hiroo Ichikawa (and 2 others) 4, Agent address: 2-12-7-6, Shinbashi, Minato-ku, Tokyo, Supplementary Part 2, “Brief explanation of drawings J, Column 7, Contents of amendment (1) On page 2, line 5 of the specification, "(A) to (E)" should be corrected to "(A) to (F)." (2) On page 29, line 13 of the specification, "(A) to (D)" is corrected to "(A) to (F)."

Claims (2)

[Claims] (1) A corrugated row is formed by alternately forming vertical peaks and troughs on a sheet material, and the corrugated row is made to meander in a planar waveform, so that the amplitude ratio of each cross-sectional wave of the corrugated row is H/L (L: wavelength, H: amplitude) is 0.2 or more, and the meandering polymerization rate D/L (D: amplitude of plane meandering wave) between the corrugated rows in a planar shape is 0.5 or more,
Furthermore, a corrugated core is formed with a meandering rate D/N (N: wavelength of a plane meandering wave) of each of the corrugated rows in a planar shape of 0.15 or more, and a flat liner is bonded to at least one side of the corrugated core. A wrap-around case characterized in that a reinforced composite corrugate body is formed, a line for forming a wrap-around case is attached to the composite corrugate body, and the composite corrugate body is made into a box along the ruled line. (2) The wraparound case according to claim 1, wherein the wraparound case is formed by forming a box with the corrugated core inside.