JP2017114063A - Hollow laminated plate and end part treatment method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow laminated plate and an end part treatment method of the hollow laminated plate which prevent expansion of air in a hollow part space that occurs when an end of a hollow laminated base material having an independent hollow part is subjected to heat seal processing, and can suppress occurrence of a projection portion.SOLUTION: There is provided a hollow structural plate that has an opening that makes an independent hollow part communicate with outside air, in the vicinity where an end part of a hollow laminated base material is schedule to be subjected to heat seal processing, in which the opening is a notch or a hole or a notch and a hole, and the hollow laminated base material is any one selected from the following (1) to (3): (1) a hollow laminated base material in which a surface material formed from a thermoplastic resin sheet is laminated on at least one surface of a core material 1 formed from sheets having a plurality of hollow-shaped projections formed on one surface; (2) a hollow laminated base material in which a surface material formed from a thermoplastic resin sheet is laminated on at least one recessed portion side of a core material 2 formed by heat fusion in a state where projections protruded on the sheet abut each other; and (3) a hollow laminated base material in which an independent hollow portion is arranged so as to be adjacent to each other by a vertical wall portion and has surface materials on both of upper and lower surfaces of a core material 3 having a honeycomb structure.SELECTED DRAWING: None

Description

  The present invention relates to a hollow laminated plate that is easy to end heat seal and an end processing method thereof.

Improving the fuel consumption of automobiles is an important item in automobile development. As a method for solving this, weight reduction of vehicles has been mentioned, and various automobile parts have been actively reduced in weight.
As one of those, wood interior boards such as hardboards have been used for car interiors such as luggage boards. However, environmental destruction caused by deforestation, or phenolic resin used as a binder has an adverse effect on the human body. In some cases, it is being switched to a component using a lightweight and rigid hollow laminated base material such as a plastic cardboard having an independent hollow portion.
As this hollow laminated base material, it is common to use a material such as a non-woven fabric or the like that is bonded to at least one surface to enhance the design and cut into the shape of each automobile interior part. The thickness is 5 mm and the basis weight is 1500 g / m ^2. A hollow laminated base material of a degree is used.

Examples of this type of hollow laminated base material having an independent hollow part include “Single Cone (registered trademark)” and “Twin Cone (registered trademark)” manufactured by Ube Eximo Co., Ltd.
The present applicant has intensively studied a plate material capable of improving rigidity without impairing weight reduction, and heat-melting in a state in which the hollow frustum-shaped projections protruding from the thermoplastic resin sheet are butted together. Proposing a manufacturing method of core material “Core Cone (registered trademark)” that is made by wearing a hollow structure plate material in which a surface material made of a thermoplastic resin sheet is bonded to both sides of the core material obtained by the method It is marketed under the name “Twin Corn (registered trademark)”. Twin cones are lightweight, have a cross-sectional harmonica structure (hereinafter sometimes referred to as “PP”), have less direction than hollow plates, and have a thickness of around 9 to 20 mm. Suitable, it is being used not only for automobile interior materials but also for logistics materials and building materials.

  Further, the present applicant, as a lighter hollow laminate base material, “single cone (registered) in which only one core cone is used as a core material and a surface material made of a thermoplastic resin sheet is bonded to at least one surface thereof. In general, a surface material made of a thermoplastic resin sheet is laminated (bonded) to the projecting hollow frustum-shaped recess opening side.

By the way, when these hollow laminated base materials are used as automobile interior members or the like, there is a problem that the edges are cut at a sharp angle at the time of handling or contact only by cutting into a component shape. Moreover, since it is hollow, the end face of the base material is exposed, so that sanitary problems such as dust entering the base material and design properties are also impaired. Therefore, the terminal processing which seals the terminal of a hollow laminated base material becomes essential.
Patent Document 1 discloses a material obtained by subjecting a laminated material formed by laminating a cover sheet made of a thermoplastic resin and a skin material to one side of a thermoplastic resin sheet having a vertical wall portion. However, in the portion subjected to the terminal treatment by melting and heating, there is a possibility that the appearance may be deteriorated because a bulging portion (swelling) is generated on the surface due to the expansion of air in the independent space. Furthermore, when the laminated material is reduced in weight, the thickness of the skin material or the like is reduced, so that it cannot withstand the expansion of air in the independent space of the laminated material, and the bulging portion (the height of the bulge is 0.5 mm). ) May become noticeable and may deteriorate in appearance.

International Publication No. 2012/049878

  The present invention has been made to solve the problems in the end seal of the above-mentioned conventional thermoplastic hollow plate, and is generated when the end of a hollow laminated substrate having an independent hollow portion is heat sealed. An object of the present invention is to provide a hollow laminated plate and a method for treating the end of a hollow laminated substrate, which can prevent the expansion of air in the hollow space and suppress the occurrence of protrusions.

As a result of diligent research to solve the problems of the prior art, the inventors of the present invention have an opening that communicates the air in the independent space with the outside in the vicinity of the terminal processing by melting and heating of the laminated material. It has been found that the protrusions can be suppressed by providing them.
That is, the present invention provides the following [1] to [8].
[1] A hollow laminated board obtained by subjecting a hollow laminated base material made of a thermoplastic resin having an independent hollow part to end treatment, and the hollow laminated board is scheduled to be end heat sealed of the hollow laminated base material Is provided with an opening for allowing the independent hollow portion to communicate with the outside air, the opening is a notch or a hole, or a notch and a hole, and the hollow laminated base material has the following ( A hollow laminated board, which is any one selected from 1) to (3).
(1) A hollow laminated base material in which a surface material made of a thermoplastic resin sheet is laminated on at least one surface of a core material 1 made of a sheet having a plurality of hollow convex portions formed on at least one surface.
(2) A hollow in which a surface material made of a thermoplastic resin sheet is laminated on the surface of at least one of the concave portions of the core material 2 that is heat-sealed in a state where the convex portions projecting from the sheet are butted together Laminated substrate.
(3) The hollow laminated base material which has a surface material on both upper and lower surfaces of the core material 3 of a honeycomb structure by which an independent hollow part is arrange | positioned adjacent to each other by the vertical wall part.
[2] In the hollow laminated base material of the above (1) or (2), in the hollow laminated base material of the above (3), at least one of the convex portion of the core material 1 or the core material 2 or the surface material. Is a hollow laminated plate according to [1], wherein the vertical wall portion of the core material 3 has the notch.
[3] In the hollow laminated base material of (1) or (2), the hollow laminated base material of (3) is provided on at least one of the hollow projections of the core material 1 or the core material 2 or the surface material. In, the hollow laminated board as described in [1] which has the said hole in at least any one of the vertical wall part of the core material 3, or a surface material.
[4] The hollow laminated base material is the hollow laminated base material according to (1) or (2), and the hollow convex portion has a frustum shape on at least one surface of the core material 1 or the core material 2. The hollow laminated plate according to any one of [1] to [3], wherein a surface material made of a thermoplastic resin sheet is laminated.
[5] The hollow according to any one of [1] to [4], wherein a skin material is laminated on the surface of the surface material opposite to the surface on which any one of the core materials 1 to 3 is laminated. Laminated board.
[6] A hollow laminated plate member obtained by subjecting the hollow laminated plate according to any one of [1] to [5] to end heat sealing.
[7] An end processing method for a hollow laminated base material made of a thermoplastic resin having an independent hollow portion, wherein an opening for allowing the independent hollow portion to communicate with outside air is provided in the vicinity of the end heat seal processing scheduled A method for treating an end of a hollow laminated base material, characterized by providing a notch or a hole, or a notch and a hole.
[8] A method for producing a hollow laminate member, characterized by heat-sealing and shaping the vicinity of the end treatment portion of the hollow laminate according to any one of [1] to [5] .

The hollow laminated plate of the present invention is provided with an opening for allowing the independent hollow portion to communicate with the outside air in the vicinity of the end heat seal processing scheduled of the hollow laminated base material having the independent hollow portion. At the time of sealing, the gas expanded by heating in the independent hollow portion can escape from the opening to the outside air, so that the independent hollow portion expands due to the heat of the heat seal, and a protrusion is formed. There is nothing, and a hollow laminated plate capable of performing a beautiful seal end treatment can be provided.
The hollow laminated board of the present invention is subjected to end heat sealing, and a hollow laminated board member having a beautiful end can be provided.
According to the edge processing method of the hollow laminated base material of the present invention, processing can be performed with good reproducibility using equipment such as a general heat seal mold.
Since the manufacturing method of the hollow laminated board member of the present invention has been subjected to end treatment on the hollow laminated board in advance,
A method capable of providing a beautiful end heat seal relatively easily can be provided.

It is a flowchart of the hollow laminated base material-> hollow laminated board-> hollow laminated board member of this invention. (A) Upper surface side perspective view of an example of the core material 1 of the hollow laminated base material used in the embodiment of the present invention, (b) Longitudinal sectional view showing the structure of the convex portion, (c) Lower surface side perspective view, (d) 2 is an enlarged cross-sectional schematic diagram of a hollow laminated base material in which a surface material is laminated on the bottom bottom side of the truncated cone of the core material, and (e) a hollow laminated base material in which the surface material is laminated on both surfaces of the core material. It is a schematic cross section of the core part of the hollow laminated base material using an example of the core material 2 used for embodiment of this invention. It is explanatory drawing of the embodiment which notched in the surface material side as an opening part in this invention, and provided the cut. It is explanatory drawing of the embodiment which gave the notch to the convex part of the core material 2, and a surface material, and a convex part as an opening part in this invention. It is explanatory drawing of the installation location in the case of employ | adopting a hole as an opening part in this invention. It is a partially broken perspective view which shows an example of the hollow laminated board member by which the edge part heat seal process was carried out in this invention. It is a partially broken perspective view which shows an example of the hollow laminated board member by which the window frame part was heat-sealed at the edge part in this invention. It is a schematic cross section which shows an example of the embodiment which carried out the edge part sealing process by the upper-lower surface material butt | matching by the thickness direction center part. It is a schematic cross section which shows an example of the embodiment which formed the edge part seal part in the lower surface material side. It is a schematic cross section which shows an example of the embodiment which formed the edge part seal part which has a design curve in the lower surface material side.

In the present invention, as shown in FIG. 1, a hollow laminated base material having an independent hollow portion is subjected to edge treatment as a preliminary treatment for edge heat sealing to obtain a hollow laminated plate, and then the edge treatment is performed. The present invention relates to a hollow laminated plate or a hollow laminated plate member related to a flow of performing an end heat sealing process on the applied hollow laminated plate to obtain a hollow laminated plate member.
The hollow laminated board of the present invention is a hollow laminated board obtained by subjecting a thermoplastic resin hollow laminated base material having an independent hollow part to end treatment, and the hollow laminated board is an end of the hollow laminated base material. An opening for allowing the independent hollow portion to communicate with the outside air is provided in the vicinity of the portion scheduled to be partially heat-sealed, and the opening is a notch or a hole, or a notch and a hole, and the hollow laminated base material Is any one selected from the following (1) to (3).
In the present invention, the independent hollow portion is a state in which the concave portion on the inner surface side of the convex portion formed on the plastic sheet is laminated with a surface material made of a thermoplastic resin sheet, and gas (generally air) is sealed. It means each individual space portion or each core space in the case where independent hollow portions are continuous by a vertical wall portion such as a honeycomb core.
In the present invention, the “vicinity part” of the “proximal part scheduled for end heat seal processing” means a region where an independent hollow part existing closest to the end heat seal planned line is present.

<Hollow Laminate Base Material (1)>
The hollow laminated base material of (1) is thermoplastic on at least one surface of a hollow convex molded sheet made of one or two thermoplastic resin sheets having a plurality of hollow convex portions formed on at least one surface. A surface material made of a resin sheet is laminated.
FIG. 2 shows one mode. As shown in FIG. 2 (a), the hollow laminated base material shown in FIG. 2 is provided with a plurality of convex portions 12 regularly on one surface of a thermoplastic resin sheet (core material) main body portion 11, and the lower bottom side is In this embodiment, an open hollow frustoconical shape is formed, and the convex portion row 13 is configured by providing the convex portions 12 in a row at predetermined intervals along the longitudinal direction of the main body portion 11. Such a convex part row | line | column 13 is comprised and provided in multiple rows for every predetermined space | interval in the width direction of the hollow protrusion sheet | seat base surface 11. FIG. The projecting row 13 has a so-called zigzag shape in which the position of the projecting portion of the hollow frustum shape in the width direction is shifted from the adjacent projecting row 13 ′, and a hollow laminated base material with more isotropic properties Desirable to do. The shape of the hollow frustum may be a hollow frustum shape (not shown). The plurality of convex portions 12 may all have the same form, or two or more forms may be freely selected and combined. A step may be provided in the middle of the convex portion 12, or the convex portion 12 may be provided. It is also possible to provide a wave in the middle of this. In the following, description will be made by using a hollow frustoconical convex portion.

The taper angle of each convex portion 12 and the taper angle θ of each concave inner surface 14 (shown in FIG. 2B) are in the range of 46 to 80 °, more preferably in the range of 60 to 75 °. When the taper angle is less than 60 °, the pressure resistance as a core material is insufficient. On the other hand, when the taper angle is 75 ° or more, the thickness of the wall surface of the convex portion is reduced, and similarly the pressure resistance is insufficient.
Moreover, the lower bottom part diameter of each convex part 12 is 3-30 mm, the upper bottom part diameter is 1.5-20 mm, the clearance gap between adjacent frustoconical convex parts is 10 mm or less, and the height of a convex part shall be 3-20 mm. When the gap interval between adjacent frustoconical convex portions is 10 mm or more, the pressure resistance tends to be insufficient. If the height of the convex portion is 3 to 20 mm, the core material has pressure resistance, and there is little deformation and sag in repeated use.

  As for the thickness of the main-body part 11, 0.1-2 mm is preferable. If the thickness of the main body portion 11 is less than 0.1 mm, when the plurality of convex portions 12 are formed by molding with a molding machine, the respective convex portions 12 cannot obtain sufficient rigidity in a film state, so that thermoplasticity is obtained. The pressure resistance as a hollow protrusion sheet of a core material such as a resin hollow plate (distribution plate material) is insufficient, and the convex portion is destroyed.

  Furthermore, a surface material made of a thermoplastic resin sheet is laminated on at least one surface of the core material 1. When the surface material is laminated only on one surface, the surface material is laminated on the lower bottom side 14 of the truncated conical recess, that is, the upper surface of FIG. 2C, and has a cross section shown in FIG. A laminated substrate is obtained. FIG. 2E is a cross-sectional view when the surface materials 15 and 16 made of thermoplastic resin sheets are laminated on both surfaces of the core material 1.

<Hollow Laminate Base Material (2)>
The hollow laminated base material (2) is made of a thermoplastic resin sheet on at least one concave side surface of the core material 2 which is heat-sealed in a state where the convex portions projecting from the sheet are butted together. It is a hollow laminated base material in which a surface material is laminated.
As an example in FIG. 3, a hollow laminated base material showing a partial cross section is obtained by fusing the convex vertices of the hollow projection sheets 21 a and 22 a having two frustoconical convex portions made of a thermoplastic resin sheet. The surface materials 23 and 24 are bonded to both surfaces of the core material 2 formed by bonding. This type of hollow laminated base material is commercially available from Ube Eximo Co., Ltd. as “Twin Cone (registered trademark)”.
Further, the core material 2 of the present invention may be a core material that is heat-sealed in a state in which the convex portions of the truncated pyramid shape, the columnar shape, or the prism shape are overlapped, and the concave portion of at least one of the core materials. A hollow laminated substrate can be obtained by laminating a surface material made of a thermoplastic resin sheet on the side surface.

  In the present invention, the hollow laminated base material is the hollow laminated base material according to (1) or (2) above, and at least one surface of the core material 1 or the core material 2 in which the hollow convex portion has a frustum shape. It is more preferable to form a hollow laminated board using a hollow laminated base material in which a surface material made of a thermoplastic resin sheet is laminated.

<Hollow Laminate Base Material (3)>
The hollow laminated base material of (3) is a hollow laminated base material having surface materials on both upper and lower surfaces of the core material 3 having a honeycomb structure, in which independent hollow portions are arranged adjacent to each other by vertical wall portions. is there. Specifically, it is a laminated substrate having a honeycomb-shaped hollow core layer having a large number of polygonal hollow portions (not shown) such as a triangular shape or a quadrangular shape in plan view.

The thermoplastic resin used for the core material and the surface material of the hollow laminated base material of the present invention is not particularly limited. For example, polyolefin resins such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene, homopolypropylene, random polypropylene, block-like polypropylene, and their comonomers or copolymers of comonomers with other monomers, polyvinyl chloride , Chlorinated polyvinyl chloride, ABS, AAS, AES, polystyrene, polyethylene terephthalate, polycarbonate, polyamide, polyvinylidene fluoride, polyphenylene sulfide, polysulfone, polyether ketone and copolymers of these comonomers or comonomers with other monomers, etc. These may be used alone or in combination. As described above, various thermoplastic resins can be used. However, in consideration of balance with properties such as cost, moldability, physical properties, low temperature resistance, heat resistance, etc., polypropylene resin is preferable, and self-extinguishing is also possible. When the property is required, a polycarbonate resin is preferable.
In order to increase the rigidity of the core material, a filler may be blended as an auxiliary material.
The auxiliary material is not particularly limited, but talc, calcium carbonate, and the like are preferable in consideration of the balance with cost, formability, handleability, and the like. Increasing the amount of filler added leads to high costs and specific gravity. Therefore, considering these balances, the amount added is 5 to 30% by mass in the case of talc and 20% in the case of calcium carbonate. It is preferable to be about% or less.
In addition to the filler, an antioxidant, an ultraviolet absorber, an antistatic agent, an antibacterial agent, a flame retardant, a light stabilizer, a lubricant and the like may be added as necessary.

<Opening>
The hollow laminated board of this invention is equipped with the opening part for the independent hollow part of a hollow laminated base material to connect with external air in the vicinity part of the edge part heat seal process plan of a hollow laminated base material. In the present invention, that the independent hollow portion communicates with the outside air includes not only the outside air that is generally interpreted, but also includes the passage between the adjacent hollow convex portions within the hollow laminated base material. In this invention, the opening part to a hollow laminated base material is provided in the vicinity part of the edge part heat seal processing plan which is given after that. In the present invention, the vicinity means an area in a range where the independent hollow portion is expanded by the heat during the end heat sealing process.
In the present invention, the opening is a notch or a hole, or a notch and a hole, and the notch includes a linear cut.

(Notch)
In the present invention, in the hollow laminated base material of (1) or (2), in the hollow laminated base material of (3), at least one of the convex part of the core material 1 or the core material 2 or the surface material. And it can be set as the hollow laminated board which has a notch in the vertical wall part of the core material 3. FIG.
FIG. 4 shows an embodiment in which notches 40, 41 and notches 42 are provided as openings on the surface material 23 side on the upper surface side of the hollow laminated base material having the cross section shown in FIG. 3. In the figure, the notch 40 is applied, for example, when the left edge of FIG. 4 is heat-sealed linearly. In addition, when the corner portion is heat-sealed in an R (curved) shape, an inclined notch such as the notch 41 is provided. Further, the notches 40 and 41 have a notch width. However, as in the case of the notch 42, if the independent hollow portion communicates with the outside air even at the thickness of the cutting blade and the expansion due to heat can be suppressed, the width and interval of the opening can be reduced. The depth is not particularly limited. The number of rows to be notched or the like may be determined as appropriate in consideration of the heat effect during the end heat sealing process, taking into consideration the thermal properties of the thermoplastic resin. Furthermore, the notch may be a broken line-shaped notch, a curved line or a linear notch, etc., may be formed intermittently, or a combination thereof.
In addition, as a method for performing the notch, a contact processing method using a wood pattern used in a known Thomson die or a non-contact processing method such as laser processing may be used.

In the hollow laminated base material, the portion where the cutout is provided in the thickness direction is shown in FIG. 5 in the twin cone which is the hollow laminated base material belonging to (2), cut into the surface side of the top sheet 23 and the core materials 21a and 22a. An example of notching is shown. The notch 43 shows both the core materials 21a and 22a, and the notch 44 shows a state where the one surface material 23 and both the core materials 21a and 22a are notched. Further, when notching only the surface material, when providing a fusion butt portion by heat sealing at the central portion in the thickness direction, both the surface materials 23 and 24 can be provided with cuts.
Although not shown, notches can be provided for the vertical wall and the surface material (flat portion) of the core material 3 having a honeycomb structure.
The notch is related to the thickness of the core material, and if it is applied to the core material, it may buckle in the thickness direction during end heat sealing, so if the core material is thin, It is preferable to make a notch.

(Hole)
In the present invention, in the hollow laminated base material of (1) or (2), the hollow laminated body of (3) is provided on at least one of the hollow convex portion of the core material 1 or the core material 2 or the surface material. In the base material, the hole as the opening can be provided in at least one of the vertical wall portion of the core material 3 and the surface material.
In the present invention, an example in which a hole is provided as an opening is shown in FIG. This figure exemplifies a case where a hole as an opening is provided on the surface material 23 side on the upper surface side in the hollow laminated base material (“Twin Cone (registered trademark)”) having a cross section shown in FIG. (Individual hole) 50 shows a case where an opening that is perforated from the surface material 23 side on the upper surface side toward the independent hollow portion 21a and communicates with the outside air is provided, and the hole (shared hole) 51 is adjacent. The case where a large hole is provided so that the four independent hollow portions 21a can communicate with the outside air is shown. The common hole 51 may have any form as long as the plurality of independent hollow portions 21a communicate with the outside air. FIG. 6 shows a case where holes are provided in the surface material 23 on the upper surface side. However, it is general that holes are also provided in a substantially symmetrical position on the surface material 24 on the lower side. When providing holes as openings on both the upper and lower surface sides, whether they are single holes or shared holes, or their sizes, etc. are affected by the temperature distribution on the hollow laminated substrate of the heat seal processing device The contact time may be appropriately determined, and it is not always necessary to make symmetry between the upper and lower surface materials, and may be appropriately determined according to the requirements of the hollow laminated plate member.
Further, the type of the hole may be a round hole, a square hole (square hole), a long round hole (obtained by rounding a rectangular corner), a long square hole (rectangular hole), or the like.
The size of the hole is not particularly limited as described above. One or more holes may be provided for one independent space, or one or more holes (shared holes) may be provided for a plurality of independent spaces.
Examples of the drilling method include a known contact processing method such as punching or a non-contact processing method such as laser processing.

In this invention, it can be set as the hollow laminated board by which a skin material is laminated | stacked on the surface on the opposite side of the surface on which either of the core materials 1-3 is laminated | stacked. The skin material is laminated on the surface material by a heat fusion method when the skin material has heat-fusibility, and by an appropriate adhesive when it is not suitable for heat-sealing.
Examples of the skin material include a non-woven fabric, a woven fabric (fabric), and artificial leather (laser skin). Moreover, when a surface material exists on both surfaces, you may laminate | stack the thing from which a different kind and design (color, pattern) differ on both surfaces.
Lamination of the skin material may be performed at the stage of the hollow laminated base material or after the opening is provided to form a hollow laminated board. In any case, it is preferable that end heat sealing can be performed together with the laminated skin material because the number of steps can be shortened.

  This invention also provides the hollow laminated board member which gave the edge part heat-sealing process to the hollow laminated board which has the opening part mentioned above.

An end treatment method for a hollow laminated base material of the present invention is an end treatment method for a hollow laminated base material made of a thermoplastic resin having an independent hollow portion, and the independent treatment is performed in the vicinity of the end heat seal processing scheduled. As an opening for the hollow portion to communicate with the outside air, a notch or a hole, or a notch and a hole are provided. The end treatment method of the present invention includes a process of providing an opening in the vicinity of a portion corresponding to the R-shaped end portion 60 of the hollow laminated plate member as shown in FIG. 7, and a hollow laminated plate as shown in FIG. This is also applied to a portion corresponding to an end heat seal processing scheduled portion for forming a window frame-shaped handle portion 61 and the like inside.
Since the opening, notch, hole and the like have already been described in detail, the description thereof will be omitted.

This invention also provides the manufacturing method of the hollow laminated board member characterized by heat-sealing and shape | molding the vicinity of the edge part process part of the hollow laminated board by the said this invention.
As a method of heat-sealing and shaping while melting, the method disclosed as “Resin Laminated Board Member and its Terminal Treatment Method” in Republished Patent (A1) WO2012 / 049878 can be applied. That is, it is sandwiched by a pair of hot blades from above and below so that the end treatment portion and the heat seal treatment portion of the hollow laminate are opposed to each other, and a heat welding portion is formed substantially at the center in the thickness direction of the hollow laminate. be able to.
In order to form the heat-welded part at approximately the center in the thickness direction of the hollow laminated plate, the hollow laminated plate material is fixed and held by, for example, upper and lower pressing tools, the upper hot blade is lowered from above, and at the same time the lower hot blade is It is preferable that the upper and lower blades are sandwiched so that the upper and lower blades are engaged with each other at a substantially central position in the thickness direction of the hollow laminate while heating, softening and deforming the hollow laminate.
When skin materials are laminated on the upper and lower surface materials, the upper and lower skin materials are overlapped at approximately the center in the thickness direction, and are melted and cut at an edge portion provided on at least one of the upper and lower hot blades.
In the shaping, when the cross-sectional shapes of the upper and lower hot blades are matched, the beautiful end portions as shown in FIG. 9 can be obtained by resembling the curved shape after the end molding.

  Moreover, the manufacturing method of the hollow laminated board member of this invention was equipped with the opening part in the independent hollow part of the hollow laminated base material which has a surface material on both surfaces of the core material 1, as shown by FIG.10 and FIG.11. When a hollow laminated plate is placed on a flat plate and a hot blade having an inclined blade shape is lowered from the upper part to form a flat terminal portion having the shape shown in FIG. Even when a curved terminal as shown in FIG. 11 is formed by the side hot blade, it is possible to eliminate the adverse effect of expansion of the independent hollow portion due to the heat and form a beautiful end treatment surface.

  EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples at all.

[Manufacture of hollow laminated substrates]
As a hollow laminated base material, a hollow laminated base material (single cone: product number TSC5- manufactured by Ube Eximo Co., Ltd.) obtained by melting and laminating a surface material made of a thermoplastic resin sheet on both surfaces of a hollow truncated cone-shaped core material 1. 0853N) was prepared. This hollow laminated base material has a weight per unit area of 850 g / m ² in which the core material 2 is made of a polypropylene resin as a thermoplastic resin. In the obtained core material 1, the convex portion of the core material has a hollow truncated cone shape, the protrusions are arranged in a staggered pattern, the tip diameter of the hollow truncated cone is φ2 mm, and the base (lower bottom) diameter is φ 6 mm, gap distance between convex parts is 2 mm, height of truncated cone is 4.5 mm, sheet part thickness is 0.35 mm, ratio of shortest distance between base parts to shortest distance between convex part tip parts is 3 : 1
Further, on both the front and back surfaces of the core material, a polypropylene resin (manufactured by Prime Polymer: E601) is extruded into a sheet shape to form a surface material, and the thickness of the surface material contacting the tip of the convex portion is 0.325 mm, and the basis weight is 325 g / and the resin sheet m ^2, the thickness of the surface material in contact with the base of the convex portion 0.175 mm, basis weight 175 g / resin sheet m ^2, the whole laminated on both sides of the core material by heat sealing the thickness Of 5.0 mm and a weight per unit area of 850 g / m ² was obtained.

Example 1
[Manufacture of hollow laminates]
From the obtained hollow laminated substrate, in order to obtain a hollow laminated plate member having an oblong shape of 200 × 300 mm and end heat-sealed at 4 corners to 30 mmR, as follows, A hollow laminate having an opening in the vicinity of the end heat seal processing schedule was obtained.
First, a hollow laminated substrate was punched into a predetermined outer dimension by a punching metal punching die that can be set in a press to punch a predetermined size.
Next, in the independent hollow portion 10 mm inside from the edge of the punched outer shape, the surface material that contacts the base of the convex portion is cut out by a Thomson blade with a width of 2 mm, and the independent hollow portion is outside air and partly hollow laminated A hollow laminate plate was obtained which was allowed to communicate between the convex portions of the substrate.

[Manufacture of hollow laminate members]
Next, with respect to the hollow laminated plate provided with openings by notches, end heat sealing was performed by an end heat sealing machine equipped with an upper hot blade and a lower hot blade corresponding to the size to be obtained. .
The obtained end heat seal surface was beautiful as shown in FIG.

Comparative Example 1
An end heat sealing process was performed without punching the hollow laminated base material into a predetermined dimension shape without using a hollow laminated plate having an opening as in Example 1 above. Unevenness due to the swelling of the independent hollow portion was observed at the end, and the protruding portion (projection height 0.5 mm) was remarkable and the appearance was poor.

The hollow laminated board of this invention can be utilized as a hollow laminated board which can obtain the hollow laminated board member in which the beautiful heat-sealing edge part process is possible.
The edge processing method of the hollow laminated base material of the present invention can be effectively used as an edge processing method for obtaining a hollow laminated plate member capable of performing a beautiful heat-sealed edge processing.
The method for producing a hollow laminated plate member of the present invention can be used as a method for performing a beautiful end heat seal relatively easily because the end treatment is performed on the hollow laminated plate in advance.

1 Core material 1 (hollow frustoconical core material)
2 Core material 2
3 Core material 3
10 hollow laminated base materials 11 and 21 thermoplastic resin sheet body (base surface)
12 convex part 13 convex part row | line | column 14 frustum-shaped recessed part lower bottom side skin material
15, 16 Surface material 21a, 22a Hollow protrusion sheet (core material 2)
23, 24 Surface material 40, 41 Notch 42 Notch 43, 44 Notch 50 Hole (single hole)
51 holes (shared holes)
60 Corner R portion 61 Window frame-shaped handle portion 62 Linear seal portion 63 Curved seal portion

Claims (8)

A hollow laminated board in which an end treatment is applied to a hollow laminated base material made of a thermoplastic resin having an independent hollow part,
The hollow laminated plate is provided with an opening for allowing the independent hollow portion to communicate with the outside air in the vicinity of the end of the hollow laminated base material where heat sealing processing is scheduled.
The opening is a notch or hole, or a notch and hole,
And the said hollow laminated base material is either selected from the following (1)-(3), The hollow laminated board characterized by the above-mentioned.
(1) A hollow laminated base material in which a surface material made of a thermoplastic resin sheet is laminated on at least one surface of a core material 1 made of a sheet having a plurality of hollow convex portions formed on at least one surface.
(2) A hollow in which a surface material made of a thermoplastic resin sheet is laminated on the surface of at least one of the concave portions of the core material 2 that is heat-sealed in a state where the convex portions projecting from the sheet are butted together Laminated substrate.
(3) The hollow laminated base material which has a surface material on both upper and lower surfaces of the core material 3 of a honeycomb structure by which an independent hollow part is arrange | positioned adjacent to each other by the vertical wall part.   In the hollow laminated base material of the above (1) or (2), at least one of the convex part of the core material 1 or the core material 2 or the surface material, the core in the hollow laminated base material of the above (3) 2. The hollow laminated plate according to claim 1, wherein the notch is provided in a vertical wall portion of the material 3.   In the hollow laminated base material of (1) or (2), at least one of the hollow convex part of the core material 1 or the core material 2 or the surface material, The hollow laminated board of Claim 1 which has the said hole in at least any one of the vertical wall part of the core material 3, or a surface material.   The hollow laminated base material is the hollow laminated base material of (1) or (2), and the hollow convex portion has a frustum shape on at least one surface of the core material 1 or the core material 2 and is thermoplastic. The hollow laminated board in any one of Claims 1-3 in which the surface material which consists of a resin sheet is laminated | stacked.   The hollow laminated board in any one of Claims 1-4 by which a skin material is laminated | stacked on the surface on the opposite side to the surface where either of the core materials 1-3 of the said surface material is laminated | stacked.   A hollow laminated plate member obtained by subjecting the hollow laminated plate according to claim 1 to end heat sealing. A method for treating an end of a hollow laminated base material made of a thermoplastic resin having an independent hollow part,
End treatment of a hollow laminated base material, characterized in that a notch or a hole, or a notch and a hole are provided as an opening for the independent hollow part to communicate with the outside air in the vicinity of the end heat seal processing schedule Method.   A method for producing a hollow laminated plate member, characterized by heat-sealing and melting the vicinity of an end treatment portion of the hollow laminated plate according to any one of claims 1 to 5.

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