JPS62130838A - Composite novel blank 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] [Field of Industrial Application] The present invention is directed to packaging materials, cushioning materials, soundproofing materials, and heat insulating materials, which are composites of paper or equivalent films or foils, foamed plastic, and metal plates. This article relates to a new composite material suitable for use as such, and its manufacturing method.

[Background of the invention]

Conventionally, corrugated beer, for example, has been widely used as a packaging material, but since corrugated beer is made from paper processed into a multilayer groove structure, it inevitably lacks pressure resistance, is still susceptible to water, or is susceptible to metal or cutlery. It has been recognized that it has drawbacks such as being easily torn apart. However, corrugated cardboard and paperboard have many advantages such as being light in weight and easy to print on the surface, so they are materials that are difficult to throw away. Therefore, for example, reinforcing the core of the corrugated goal board with fabric or other material with high tear strength may be considered, which increases the tear resistance, but the pressure resistance is still not sufficiently increased and it is still resistant to water exposure. In addition, the process of producing corrugated beer is complicated and expensive, and if the process of inserting the interlining is left behind, it will become even more expensive and complicated.

Furthermore, corrugated cardboard and paperboard are inherently unsuitable for applications in which a buffering effect is expected, and are also completely unsuitable for applications in which electrostatic charging is averse, such as packaging materials for ICs, electronic parts, and the like.

On the other hand, foamed plastics such as foamed polyurethane are used as cushioning and heat insulating materials, but their surfaces are rough and rough, so if they are to be used as products for end use, they must be covered with paper or other materials. This requires finishing by applying a surface material such as cloth or film, which increases the number of processing steps and increases processing costs. In addition, foamed polyurethane itself lacks mechanical strength and is of course not conductive.
It was unsuitable for applications requiring such properties.

Furthermore, corrugated metal sheets such as corrugated steel sheets are lightweight and strong and are used for packaging and as partitions and enclosures at construction sites, but because they do not have an elegant appearance, they must be painted with 4-India paint. There were also problems such as spoiling the appearance and causing rust.

Furthermore, corrugated metal plates have not been used with attention paid to their conductivity.

Thus, although thin layer materials (or surface layer materials) such as paper, films, and foils have favorable surface characteristics (touch, appearance, and easy marking), they lack strength and cushioning properties, and foamed plastics lack cushioning and cushioning properties. Although it has excellent heat insulation properties, it lacks strength and conductivity, and its surface appearance is poor.Furthermore, corrugated metal sheets have excellent strength and conductivity, but they have poor appearance and have the disadvantage of rusting. There are advantages and disadvantages to all three types, and no attempt has been made to combine them using a simple and inexpensive method in order to complement each other advantageously.

[Purpose of the invention]

Therefore, the present invention has been made in view of this background, and its purpose is to take advantage of the surface characteristics of paper, film, etc., while providing sufficient pressure resistance, water resistance, and tear resistance. Our objective is to provide a new composite material of paper or film, foamed plastic, and metal plate, which has antistatic properties and cushioning properties that could not be expected from paper.

Another object of the present invention is to provide a method for manufacturing such a new composite material easily and inexpensively.

[Summary of the invention]

The new composite material of the present invention is a composite of paper (or plastic film, metal foil), foamed plastic, and thin metal sheet (corrugated steel sheet) in a single process, and has a thickness of approximately 5 mm 20 mm, preferably about 10 to 20, but the width and length can be obtained in any size. A corrugated steel plate with a thickness of about 0.05 to 0.2 mm is arranged, and a foamed plastic, particularly preferably foamed polyurethane, is foamed and adhered to at least one side, preferably both sides of the corrugated steel plate, and the opposite side of the foamed plastic layer is formed. The side surface is the inner surface of the surface material (liner) placed at the same height as the ridges of the corrugated sheet, or slightly (for example, 0.5 threshold to 10 degrees) away from the ridges above (or below). It is constructed by foaming and adhering. As the liner, for example, paper with a thickness of about 0.5 to 1.0 rIrIn can be used, but it is also possible to use paper with a thickness of about 0.5 to 1.0 rIrIn, for example, polyvinyl chloride or i? I.J.
Plastic films such as ethylene or metal foils can also be used.

Approximately 0.05 to 0.2 as a thin corrugated metal plate as a reinforcing material
A corrugated cold-rolled steel plate having a thickness of 15 rrun and a suitable thickness of KO can be used. Wave heights of approximately 9 vans (small waves) or approximately 18 vans (large waves) are readily available on the market. The foamed plastic (urethane) foams and adheres to the surface of the steel plate, completely covering it, effectively preventing rust from forming. The presence of corrugations complements the adhesive strength of foamed plastic, prevents misalignment between the steel plate (!: f plastic), and strengthens the integration of the composite material. Since it is in contact with or in close proximity to the inner surface of other liners, the static charge that would otherwise build up on the outer surface of the liner is easily transferred and dissipated, giving the new composite material excellent antistatic properties. Because of this presence, even if the appearance (surface) is paper or other thin layered material, it can strongly resist being cut and torn by a knife or the like.

It is most preferable to use polyurethane as the foamed plastic in terms of high expansion ratio and strong self-adhesion. When foamed polyurethane is foamed from a stock solution, it strongly adheres to the surfaces (liner and steel plate) it adheres to, and firmly bonds the liner and metal without the need for any other adhesive or bonding agent. In addition, polyurethane has a high foaming ratio and can be foamed up to 140 times the volume of the stock solution, so just by injecting a small amount of the stock solution into the thin gap between the liner and the steel plate, the gap is completely filled and the liner and steel plate are completely bonded. can be combined with As the polyurethane, both soft and hard polyurethanes can be used, and it can be foamed into open cells or closed cells.

The urethane stock solution is continuously or intermittently injected in small amounts between the corrugated steel sheet as a reinforcing material and the liner as a surface layer above or below the corrugated steel sheet or intermittently while running the corrugated steel sheet and the liner between the steel sheet and the liner while continuously running the corrugated steel sheet as a reinforcing material and the liner as a surface layer above, below, or both in an approximately horizontal direction with a predetermined gap. By foaming on site while applying appropriate pressure from above and below in the gap between the running liner and steel plate, the gap between the liner and the steel plate is completely filled and the liner and steel plate are strongly bonded, forming a bond between the surface material and the steel plate. A composite structure in which the foam and the steel plate are firmly and integrally bonded can be obtained.

Thus, the composite structure of the present invention has three layers: a liner such as paper on one side, a foam such as expanded polyurethane, and then a reinforcing material such as corrugated steel plate.
As a three-layer structure of seed materials (tie! As a 5-layer structure of 3 types of materials (type ■
)Obtainable.

Such a composite structure has a thickness (5 to 20 mm), and there are two ways to finish the longitudinal surface (side edge surface) of this thickness. One of them (type A) is to manufacture the material with the side edges of the liner, foam, and reinforcing (core) material exposed on the side edge surface of the material. For example, while the liner, the foam (in the process of foaming), and the reinforcing (core) material are traveling through the section where the clamping pressure is applied, a padding paper or film, etc., which has a weak adhesive affinity with the foam, may be placed in a width that is approximately the same as the above thickness. The composite structure is pressed against the side edge surface while running at the same speed as a strip of paper, so that the side edge surface foams into a sharp and uniform surface, and after the composite structure is taken out from the clamping area, the padding paper is peeled off. This exposes the liner, foam, and reinforcing (core) material on the symmetry surface. The method of using such a releasable padding paper is easier and cheaper than, for example, foaming the irregularly shaped side edges without applying lateral pressure in the clamping section, and then trimming (cutting) the foam.

Another way to finish the side edge surface (tie 7'B) is to bond the edge padding material that covers the side edge surface at the same time as foaming in the clamping area. The edge padding material can be made of paper, plastic film, metal foil, etc., which has a strong adhesive affinity with the foam, similar to the liner, and is crimped from the side of the clamping area as in the case of the padding paper, and the foam is Strongly bonded by the body's self-adhesive force. The edge padding material may be applied as a strip of approximately the same width as the thickness of the resulting composite structure, or it may be applied by folding a slightly wider strip to a thickness of 1@, with the folded selvage attached to the edge of the liner. It may also be glued.

Thus, according to the present invention, new composite materials with various composite structures can be obtained by combining the above-mentioned type (1) and (2) with type A or B, but basically, the foam is
The invention is divided into at least two types: one in which the side edge surface is exposed (tie fA) with a layer (tights r) or two layers (tights "), and one in which the side edge surface is covered (type B). be able to.

At least one of the outer surfaces, preferably both the upper and lower surfaces, of this new composite material is liner, especially paper, so it looks no different from conventional cardboard, and it is easy to write on with a stamp or other writing instrument. The new material of the invention, especially when it has two layers of foamed polyurethane (top and bottom), has a steel plate in the core, so even if it is as thin as approximately 511II+1, the pressure resistance is several times that of conventional corrugated cardboard, and the core and surface layer Since the material that is bonded is foamed plastic, especially foamed polyurethane, it has excellent cushioning, sound insulation, and heat insulation properties, and can be used not only as a packaging material but also as a cushioning material, soundproofing material, heat insulation material, and a wide range of other applications. has. In addition, since the packaging material contains a steel plate, it can effectively prevent static electricity even if the surface is paper or plastic film, and it also serves as a buffer for ICs and other semiconductor electronic components. New uses can be found as antistatic packaging materials.

As outlined above, the new composite material of the present invention can be reinforced (
Since it can be manufactured by injecting the raw solution into the gap between the core material and the surface material (liner) and foaming them on-site while continuously running them, the process is simple and efficient, and the manufacturing equipment is also required. It has the advantage that it does not require anything complicated and expensive, and therefore the resulting product can be offered at a lower price than, for example, conventional plates, even though it has many superior features.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.One embodiment (tie fl+A) of the first invention (the tie 7'A=exposed side edge surface) is shown in FIG. (Tie 7'1
One example (tights I+B) of type 3=side edge covering) is shown in FIG. 4, and another example (type ■+B) is shown in FIG. 6, respectively.

Referring first to FIG. 1, the new composite material of the present invention has a thin corrugated metal plate as reinforcement on the underside, preferably about 0.15 r.
It has a corrugated steel plate 1 with a thickness of . Wave heights H of 9 mm or 18 mm are easily available on the market. The plate thickness, wave height, pitch, etc. can be varied as desired.

A foamed polyurethane layer 2 is provided on the steel plate 1 by adhering it to the corrugated surface. This adhesion is due to the adhesive strength of the polyurethane itself and does not require any other adhesive or binder. The surface opposite to the corrugated surface of polyurethane foam layer 2 (
The upper surface) is bonded to the inner surface of the surface material, preferably paper liner 3, by the adhesive force of the polyurethane itself. This bond is strong and normally does not cause delamination between the liner 3, foamed polyurethane layer 2, and corrugated steel sheet 1; however, in Figure 1, the right end of the composite structure is partially removed for illustrative purposes. It is.

As the liner 3, in addition to paper, a plastic film such as polyvinyl chloride or polyethylene, or metal foil can be used. In either case, it is necessary to use a material such as polyurethane foam that has good compatibility with the foam layer (has high adhesive affinity). The thickness of the liner 3 may be approximately 0.1 to 1 mm.

The thickness T of the composite structure can be approximately 5 to 20 times, and if a corrugated steel plate 1 with a wave height of 9 mm is used, the thickness T in T is 1011 II.
If the corrugated steel plate is I1118, it will be T medium 20. The distance between liner 3 and the top of the corrugated peak closest to it is O.
It can be varied within the range of ≦t≦1 degree. In the illustrated example, the foamed plastic is thin ((1 mm or less)) between the top of the mountain and the inner surface of the liner, and the liner 3 is covered with the foamed plastic layer 2 over the entire inner surface. When t=Q, the top of the peak of the corrugated steel plate 1 comes into direct contact with the inner surface of the liner 3, making it easier to transfer the static charge that would otherwise accumulate on the outer surface of the liner 3. , strengthens the antistatic function of new composite materials. 1 = 0
In the case of , there is a sufficient amount of foamed plastic between the ridges to strongly adhere to the inner surface of the liner. The foamed plastic layer on one side of the steel plate is considered to be one layer as a whole, even though it is separated by the top of the mountain.

The width of the new composite material is not particularly limited, but is approximately 1 to 1.5 r.
It is practical to manufacture it as a continuous length with rL width.

In the new composite material shown in FIG. 1, the surface (side edge surface) along the length direction of the thickness T is exposed. That is, the side edges of the liner 3, the foam 2, and the reinforcing corrugated steel plate 1 are all clearly aligned and exposed within the same vertical plane.

Depending on the application, this exposed surface may later be covered with a suitable covering material (eg, adhesive tape, etc.).

2 and 3 illustrate, by way of example, a method for manufacturing a new composite material of the type shown in FIG. A corrugated steel plate 1 serving as a reinforcing material is fed from the left side of the figure on a slide rail 9 in the direction of the arrow, and a surface layer material, preferably a paper liner 3, is also fed from above in the direction of the arrow and placed between them at a predetermined distance. It is introduced into the clamping pressure section with a gap of . In the illustrated example, the clamping section is constituted by a pair of flat conveyor belts 12 and 12', which are respectively hung on upper and lower pairs of rolls 10.11, 10', and 11'.

The distance between the lower run of the turmeric abelt 12 and the upper run of the conveyor belt 12' is as follows:
The thickness T is set approximately equal to or slightly larger than the thickness T shown in FIG. Numeral 13 arranged within the conveyor belt 12 are several restraining rolls, which regulate the thickness of foaming. If necessary, some of the rolls may be heated rolls. Nao, conveyor belt 12 opposite roll 13
A holding roll (or heating roll in some cases) may also be installed in the inner space (see 13' in FIG. 7).

A urethane stock solution injection nozzle 14 is placed above the incoming corrugated steel sheet 1 on the entrance side of the clamping pressure section (on the left side in the figure). The nozzle 14 is connected to the steel plate 1 as shown schematically in FIG.
It is preferable that the vehicle be mounted so that it can reciprocate transversely to the traveling direction of the vehicle.

While the liner 3 and the steel plate 1 are continuously running in the direction of the arrow, the nozzle 14 is reciprocated in a transverse manner to dispense a small amount of the stock solution 2a.
Continuously inject. The stock solution 2a adheres to the steel plate 1 in a figure 8 pattern, starts foaming, and is transferred to the conveyor belt 12.
The liner enters the clamping pressure section between 12' and gradually expands.
Fills the specified gap between steel plates and adheres to the liner/steel plate.

A side pressure applying means is provided between the inlet side and the outlet side of the clamping pressure section for applying side pressure to finish the side edge surface of the foam into a uniform surface. In the illustrated example, this means includes a horizontal rotating roll 15.15' having a thickness corresponding to the thickness (ki T) of the clamping pressure section;
As a result, it is constituted by removable padding papers 16, 16' that are pressed against the side edges of the foam. Horizontal rotating roll 15
Although only two rolls 15' are shown in FIG. 2, it is also possible to increase the number of rolls 15' to strengthen the opposing side pressure, or use something like a side pressure rail between the two rolls 15 shown in the figure. may be placed. In this way, during the foaming of urethane, the foam (foamed polyurethane layer 2) is clamped from above and below by the conveyor pellets 12, 12', and is also subjected to opposing side pressure by the rolls 15, 15' and the padding paper 16, 16'. is foamed into a rectangular cross-section and firmly bonded to the liner and steel plate at the top and bottom, and the left and right side edge surfaces are finished with sharp, uniform surfaces. After leaving the clamping section, the cover paper 16, 16' is peeled off.

Polyurethane foaming usually takes a short time to complete, e.g.
Since only seconds are required, the length of the clamping section by the conveyor belt 12, 12' may be several meters, and at most 10 meters, although it is related to the traveling speed.

The foamed polyurethane layer 2, which has been foamed and hardened, is integrally bonded to one side of the corrugated surface of the steel plate 1 and the inner surface of the liner 3, forming a composite structure that is fed out from between the conveyor belts 12, 12' in the direction of the arrow. It's coming.

This is cut into required lengths to produce products.

The distance t between the apex of the corrugated steel plate 10 and the liner 3 in the product is determined mainly by how the predetermined interval (KiT) of the clamping pressure section is set and by the pressure applied by the pressure roll 13, etc., but especially when t is substantially If you want to be zero, use
In addition to setting the interval to be substantially close to the peak height H) of the steel plate, it is also possible to synchronize and adjust the timing of injection of the stock solution by the nozzle 14 so that it is intermittently performed in accordance with the troughs of the waveform. .

Although Figure 2.3 shows a method of feeding with the liner 3 on top and the steel plate 1 on the bottom, it is possible to reverse this and continuously or intermittently inject the urethane stock solution onto the liner placed on the bottom. It can also be done. In addition, although the conveyor belt 12 is assumed to run in a straight line in FIG.
For example, if this is made to run along a circular curved surface that is concave upward (or downward), unlike the flat composite structure shown in Figure 1, it will be curved (curved upward or downward). Composite structures can be obtained that can be used to make cylindrical packaging containers.

Next, a first embodiment of the second invention (side edge surface wrapping tie 7'') will be described with reference to the sectional view of FIG. 4.

This type of new composite material consists of 10 corrugated steel plates as reinforcing materials, 1 layer of foam (foamed polyurethane layer) 2 on one side of the corrugated surface.
is the same as the embodiment of the first invention (Fig. 1) in that it has a liner 3 thereon, but its side edge surface (the surface along the length direction of the thickness T) is The difference is that it is covered with edge padding materials 4, 4 that are integrally joined.

Like the liner 3, the edge padding material 4 is made of paper, plastic film, metal foil, or the like, which has a strong adhesive affinity with the foam. The edge padding material 4 and the liner 3 may be of the same or different materials. The edge padding material 4 is made as a strip having a width greater than the thickness T of the composite structure, and its edges 4a are bent and glued to the inner surface of the liner 3.

FIG. 5 is a partial perspective view illustrating a method of manufacturing a new composite material of the type shown in FIG. In FIG. 5, the same reference numerals as in FIG. 2.3 indicate the same members. Parts specific to Figure 5 are:
This is a folded impeller 17 that folds back and presses the edge covering material 4 onto the side edge surface of the foam (omitted in FIG. 5). The liner 3 is shown with ears 4a of edge padding material 4 pasted on both side edges of the liner 3 in advance. A fold line (indicated by a dotted line) is attached to the edge guard material 4 in advance. In addition, when the liner 3 and the edge padding material 4 are made of the same material, instead of pasting as shown in Fig. 5, the liner 3 itself is made of the same material with a width of mm.
The width may be adjusted to the size of 2T (two pieces of edge padding material).

After passing the entrance of the clamping section, the edge covering material 4 is folded back from the horizontal plane to the vertical plane by the impeller 17.

Instead of the impeller 17, a member such as a slide rail whose inclination gradually changes from horizontal to vertical may be brought into contact with the edge guard material 4. The foamed polyurethane will eventually adhere to the inner surface of the folded edge padding material 4, and will be strongly bonded until the foaming is completed. Horizontal rotating roll 15 from above the edge guard material 4
Alternatively, the opposing side pressure is applied by something like a pressing roll, as in the case of FIG. 3.

The obtained new composite material has the side edge surface of the new composite material shown in FIG. 1 covered with an edge padding material having a width T, so that both the corrugations and the foam are hidden. If necessary, the lower edge of this edge padding material may be cut along the waveform.

Next, FIG. 6 shows a second embodiment (Type II) of the second invention.
+B). This type of new composite material has a corrugated steel plate 1 in the center as a reinforcing core material, and two corrugated steel plates on both sides of the corrugated surface.
Layer foaming, t? IJ urethane layers 2 and 2' are bonded together, and liners 3 and 3' are bonded to their respective outer surfaces. The side edge surfaces of this composite structure are each covered by the edge covering material 4 which is joined together during the foaming process in the same way as the liners 3 and 3', and the top, bottom, left and right sides are completely wrapped to form a new composite material. In FIG. 6, a part of the front edge cover material 4 is cut out, and the liner 3, polyurethane foam layer 2,
The side lines of the five-layer structure of the corrugated steel plate 1, foamed steel, IJ urethane layer 2', and liner 3' are exposed. The wave height of the corrugated steel plate 1 is the same as H in FIG. 1, and the distance t between the top of the mountain and the liners 3 and 3' is also O≦ as in the case of FIG.
[The range may be ≦1 mm. The upper and lower t may be the same or different, for example, the upper t is greater than zero, the lower t
can be effectively set to zero. The thickness T of the new composite material is also about 20+ m at maximum, as in the case of Fig. 1.

Note that the new composite material in which the side edge surfaces of the two-layer foam 2, 2' are left exposed (without the edge padding material 4) as shown in the partially cut-out portion of FIG. Example (type I[+
A).

FIG. 6 shows an embodiment of type TI+H, and composite new materials such as and are manufactured by the method illustrated in FIGS. 7 and 8. In Figure 7.8, Section 2.3.5
Since the same reference numerals as in the figures indicate the same members, repeated explanations will be omitted. Further, the same reference numeral with (') added thereto, for example, the urethane stock solution injection nozzle 14', indicates that two of the same ones are provided.

The unique member in Fig. 7.8 is the edge covering material applying means installed in front of the entrance of the clamping section (conveyor belt 12, 12'), namely the roll with flannel for introducing the edge covering material 4 onto the side edge surface. 18, a pushing roll 19 which cooperates with this to fold the edge covering material 4 into the width T, and an applicator 20 which applies adhesive to the selvage portions (4a, 4b) of the edge covering material 4 in front of the pushing roll 19. The edge covering material application means are provided in a pair in front of the entrance of the clamping pressure section and facing each other in the width direction of the clamping pressure section.
The edge padding material 4b in Figure 8 is the same material as the edge padding material in Figure 4.5 above, but the dimensions are smaller than the thickness T of both ears 4a, 4.
The difference is that it is wider by b.

The entire clamping pressure section is basically constructed in the same way as shown in Fig. 2, but since the liners 3 and 3' are supplied from above and below with the corrugated steel plate 1 at the center, the clamping pressure section is constructed just before the entrance of the clamping pressure section. Two urethane stock solution injection nozzles are provided, one 14 on the steel plate 1 and one 14' on the lower liner 3'. Both of them are supported from the sides so as to be swingable in a horizontal plane, similar to the nozzle 14 in FIG.

In FIG. 7, small amounts of stock solution 2a, 2a' are continuously or intermittently injected from nozzles 14, 14' onto the steel plate 1 and onto the lower liner 3', respectively. Liner 3, 3'
Before the steel plate 1 enters the clamping area while maintaining a predetermined gap (middle T), the edge protector 4 from both left and right sides bends its upper and lower ears 4a and 4b onto the liner 3.3'. Applicable. The edge padding material 4 has the above-mentioned width dimension, and as seen in FIG. 8, is supplied from both sides to the entrance of the clamping section. First, adhesive is applied to the ears 4a, 4b (see FIG. 7) by the applicator 20. The pushing roll 19, 19' has a thickness approximately equal to the thickness T, as seen by 19' in FIG. 4a, 4b inward (4, 4a, 4b shown in cross section on the left side of the Franz roll 18 in FIG.
). The ears 4a, 4b guided by Franz onto the liners 3 and 3' are then 0. -/l/10 and 10' are pressed against the edges of the liners 3, 3' and enter the clamping section in a manner that closes the side edge surfaces of the composite structure that is about to be formed. In such an enclosure, the stock solutions 2a, 2a' gradually foam 2.2' to fill the gaps, and are strongly and integrally bonded to the liners 3, 3', the steel plate 1, and the edging material 4, and the foaming process continues. Similarly, opposing side pressure is applied to the side edge surfaces by the horizontal rotating rolls 15 and 15' shown in FIG. A new composite material as shown in FIG. 6, consisting of upper and lower foam layers 2 and 2', is formed all at once in a single process.

〔Effect of the invention〕

According to the present invention, the raw materials used are those that are easily available on the market, whether it is liners, corrugated steel sheets, or edge padding materials, without any special or complicated reprocessing or treatment. Urethane can be used in the manufacturing process as is, and since urethane has a high foaming ratio and only a small amount can be used as a stock solution, it is inexpensive in this respect as well.The processing equipment that combines these three raw materials is also relatively inexpensive. Since it can be installed easily and inexpensively, the new composite material of the present invention can be provided at low cost in all respects.

In this way, according to the present invention, a surface material such as paper, a plastic foam, and a metal plate are compositely integrated by a simple, inexpensive and efficient method, and a new composite material with unprecedented excellent properties is created. provided. This new composite material retains the surface properties of paper and other surface materials, while exhibiting pressure resistance, water resistance, and tear resistance that cannot be obtained with polymeric paper, as well as cushioning performance and antistatic functions. Because it has excellent and diverse properties, it is a new type,
It can be used to create packaging and packaging containers for new uses, and can also be widely used as building materials, interior decoration and partitioning materials, etc.

[Brief explanation of drawings]

Fig. 1 is a partially peeled perspective view showing an example of a new composite material of the present invention of a type in which the foam is one layer and the transparent surface of 911I is exposed; Figure 3 is a cross-sectional view taken along the line m-[ in Figure 2; 5 is a partial perspective view illustrating a method for manufacturing the new composite material of FIG. 4; FIG. FIG. 7 is a partially cutaway perspective view showing an example of a new composite material of the type in which the side edges are covered with two layers of foam. FIG. 7 shows a method for manufacturing the new composite material of FIG. An illustrative partial side view. FIG. 8 is a partial plan view corresponding to the direction shown by the arrow-ti line in FIG. 7. [Main codes] 1... Corrugated metal plate (corrugated steel plate), 2, 2'... Foamed plastic layer (foamed urethane layer), 3, 3'...
Surface material (liner), 4...Edge cover material, 12.12'
... Clamping section (conveyor belt), 14.14'...
・Stock solution injection nozzle #, 15. 15'... Side pressure application means (horizontal rotating roll), 16.16'... Peelable padding paper.

Claims (1)

[Scope of Claims] 1. The opposite side of the foamed plastic layer is integrally adhered to at least one side of the corrugated surface of the corrugated metal plate and covered with a surface material selected from the group consisting of paper, plastic film, or metal foil. The inner surface is also integrally foamed and bonded to form an integral composite of the surface material, the foamed plastic layer, and the corrugated metal plate, and on both side edges of the composite there is a surface that is approximately perpendicular to the plane of the surface material. A new composite material characterized by the surface material, foamed plastic layer, and side edges of the corrugated metal plate being exposed in an orderly manner. 2. The corrugated metal plate is a cold-rolled corrugated steel plate with a thickness of about 0.05-0.2 mm, the foamed plastic is foamed polyurethane, and the surface material is paper, and the thickness of the entire integrated composite is The new composite material according to claim 1, which has a thickness of about 5 to 20 mm. 3. The new composite material according to claim 1 or 2, wherein the inner surface of the surface layer material is in direct contact with the peak of the corrugated metal plate adjacent thereto. 4. The new composite material according to claim 1 or 2, wherein a thin foamed plastic layer is also inserted between the inner surface of the surface layer material and the peak of the corrugated metal plate adjacent thereto. 5. The new composite material according to claim 1 or 2, wherein a foamed plastic layer is provided only on one of the corrugated surfaces of the corrugated metal plate. 6. A foamed plastic layer is provided on both sides of the corrugated surface of the corrugated metal plate, and different surface layer materials are adhered to opposite surfaces of each foamed plastic layer.
Composite new material described in section. 7. A foamed plastic layer is provided on both sides of the corrugated surface of the corrugated metal plate, and a surface layer material of the same quality is adhered to the opposite surface of each foamed plastic layer.
Composite new material described in Section 2 or Section 2. 8. The opposite side of the foamed plastic layer is integrally adhered to at least one of the corrugated surfaces of the corrugated metal plate, and is also integrally foamed on the inner surface of a surface material selected from the group consisting of paper, plastic film, or metal foil. The surface material, the foamed plastic layer, and the corrugated metal plate are bonded together to form an integral composite, and edge padding material is foamed on both side edges of the composite in a plane that is approximately perpendicular to the plane of the surface material. A new composite material characterized by a plastic layer that is bonded together when foaming. 9. The corrugated metal plate is a cold-rolled corrugated steel plate with a thickness of about 0.05 to 0.2 mm, the foamed plastic layer is foamed polyurethane, the surface layer material is paper, and the edge covering material is also paper. 9. The new composite material according to claim 8, wherein the total thickness of the integral composite is about 5 to 20 mm. 10. The inner surface of the surface material is in direct contact with the peak of the corrugated metal plate adjacent thereto, and the edge covering material is adhered to the side edge of the foamed plastic layer at a point other than the peak of the peak. A new composite material according to claim 8 or 9. 11. A thin foamed plastic layer is also inserted between the inner surface of the surface layer material and the top of the peak of the corrugated metal plate adjacent thereto, and the edge covering material is also inserted into the foamed plastic layer on the side of the top of the peak. The new composite material according to claim 8 or 9, which is bonded. 12. A patent in which a foamed plastic layer is provided only on one side of the corrugated surface of the corrugated metal plate, a surface material is provided on top of the foamed plastic layer, and the edge guard material is folded and glued to the side edge of the surface material at one side edge thereof. The new composite material according to claim 8 or 9. 13. There are foamed plastic layers on both sides of the corrugated surface of the corrugated metal plate, and different surface materials are adhered to the opposite sides of each foamed plastic layer, and the edge padding material The new composite material according to claim 8, which is folded and bonded to the side edge of the surface material. 14. There are foamed plastic layers on both sides of the corrugated surface of the corrugated metal plate, and surface materials of the same quality are adhered to the opposite sides of each foamed plastic layer, and the edge padding material The new composite material according to claim 8 or 9, which is folded and bonded to the side edge of the surface material. 15. A corrugated metal plate and a surface layer material selected from paper, plastic film, or metal foil placed on at least one of the upper and lower sides of the corrugated metal plate are continuously moved in one direction with a predetermined gap between them. A foamable plastic stock solution is continuously or intermittently injected between the corrugated metal plate and the surface material.
Next, the surface layer material and the corrugated metal plate were introduced into a clamping pressure section maintained at a predetermined vertical interval, and clamping pressure was applied from above and below, while opposing side pressure was applied from both sides to foam the stock solution to fill the gap and foam. The plastic layer is integrally adhered to the surface material and the corrugated metal plate to form an integral composite of the surface material, the foamed plastic layer, and the corrugated metal plate, and after the foamed plastic layer is cured, the integral composite is removed from the clamping pressure section. A method of producing a new composite material consisting of extraction. 16. The corrugated metal plate is a continuous cold-rolled corrugated steel plate with a thickness of about 0.05 to 0.2 mm, the foamed plastic is foamed polyurethane, and the surface layer material is paper, and the clamping pressure section is 16. The manufacturing method according to claim 15, wherein the vertical distance is maintained at about 5 to 20 mm. 17. Claim 15, wherein the clamping pressure section is constituted by a pair of conveyor belts that continuously run in the one direction.
Manufacturing method described in section. 18. The manufacturing method according to claim 15, wherein the opposing side pressure in the clamping pressure section is applied by a rotating roll facing between the side edges of the pair of conveyor belts via a releasable padding paper. 19. A corrugated metal plate and a surface layer material selected from paper, plastic film, or metal foil placed on at least one of the upper and lower sides of the corrugated metal plate are continuously moved in one direction with a predetermined gap between them. A foamable plastic stock solution is continuously or intermittently injected between the corrugated metal plate and the surface material.
Next, while bringing the surface material and the corrugated metal plate close to the clamping section held at a predetermined vertical interval, they are introduced into the clamping section along with an edge padding material of sufficient size to close the side edges of the predetermined gap, and are pressed from above and below. While applying pressure and opposing side pressure from both sides, the raw solution is foamed to fill the gap, and the foamed plastic layer is integrally adhered to the surface material, the corrugated metal plate, and the edge padding material, and the foamed plastic layer and the surface material are foamed. A method for manufacturing a new composite material, which comprises making a plastic layer and a corrugated metal plate into an integral composite, and after the foamed plastic layer has hardened, taking out the integral composite whose side edges are completely covered from the clamping section.