JPS6389340A - Manufacture of cushioning packaging material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a manufacturing apparatus for a cushioning packaging material, and aims to provide an apparatus for manufacturing a cushioning packaging material, which can provide a packaged object with good cushioning properties and can be packaged compactly and easily.

<Prior art> Traditionally, when packaging small radios, cassette tape recorders, and other electrical products, as well as parts such as batteries that come with them, the main product and attached parts have been wrapped separately in foam sheets or in paper boxes, etc. After that, they were stored in a tray-shaped cushioning material, etc., and then packaged in an outer case such as a cosmetic case.

Therefore, packaging is very time-consuming, the packaging materials are costly, and storage efficiency is likely to be wasted and space is wasted, so improvements have been desired.

Another method is to use a non-foamed resin sheet molded product in which storage recesses are formed in advance to match the external shape of each product, and to store the items in each recess, but manufacturing the sheet molded product is cumbersome. In addition, the cushioning protection for the upper surface of the article is not sufficient, and it is necessary to provide a certain distance between each of the plurality of recesses, so there is a problem in terms of storage efficiency. Moreover, the above-mentioned sheet molded product is inconvenient in that it requires some sort of outer case or box.

Therefore, in order to eliminate the above-mentioned drawbacks and inconveniences, a bulging portion is formed by molding so as to have an uneven shape to protect the stored items, and a flat paperboard is superimposed on a sheet molded body and pressure bonded. Although a method (see Japanese Patent Application Laid-Open No. 58-59048) was proposed, the bonding of paperboard to the molded body was difficult.
Since it is only the outer peripheral edge of the molded body, there remains a problem in terms of integrity.

Apart from this, there is also a method in which a perforated sheet of paper or the like is laminated and integrated with a synthetic resin sheet such as a foamed sheet, and then only the synthetic resin sheet is formed by vacuum forming, etc.
-47335 and Japanese Unexamined Patent Publication No. 59-178046). However, since these methods integrate the laminated sheets in the process before molding, the combined laminated sheets must be passed through the preheating process before molding. It is necessary to select and use a preheating temperature that does not cause thermal deformation, and this limitation still poses a problem.

Next, in order to avoid preheating the laminated and integrated product as described above, a method of stacking and bonding paperboard to a synthetic resin sheet molded body after preheating and molding (Japanese Patent Laid-Open No. 59
-174467) was also proposed. In this case, a lamination process for bonding must be performed after the preheating process and the molding process, and therefore a press mold for lamination must be installed separately from the molding die, making the process and manufacturing equipment complicated. Is there a problem with taking up space?

Therefore, in order to eliminate the shortcomings and inconveniences of the above-mentioned prior art, we have further improved this time to provide an even more convenient manufacturing device. A laminating material supplying means for intermittently running a long laminating material such as paper having a half-punched portion pre-cut into a developed shape with cut portions, and a synthetic resin as a main material such as a long foam sheet. A raw sheet supply means that intermittently runs the raw sheet across the long material for lamination, and a raw material feeding means that runs the raw sheet intermittently across the long material for lamination; Loading method: A female mold provided with a laminate and a half-punched part of a long material for lamination are pulled into the female mold in a vacuum-adsorbed state, and the half-punched part is loaded into the female mold with a part of it bent. means for removing the punched portion of the half-punched portion from the subsequent unprocessed portion and removing it from the opposing position of the female die; heating means for heating and softening the original synthetic resin sheet; The molded sheet is pushed into the female mold to form the bulging portion, and at the same time, the method is characterized by comprising a male mold that joins and integrates the laminated material in the female mold and the synthetic resin sheet. It is a device.

<Example> Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments.

FIG. 1 is a schematic plan view showing a manufacturing apparatus for a cushioning packaging material according to the present invention, and illustrates a case where a packaging material having a bulging shape is molded.

FIG. 2 shows the laminating material, such as paper, being fed.

The above manufacturing apparatus includes a lamination material supply means (1) that intermittently runs a long paper (P) as a lamination material, and a long foam sheet (S) as a synthetic resin sheet material that is the main material.
a paper supplying means (2) for intermittently running the paper, a female mold (3) having a forming part (31) of a predetermined shape, and a paper loading means for loading the paper (P) into the female mold (3). (4), a surplus part removing means [5] for removing the surplus paper from which a predetermined part has been punched out from a position facing the female die (3), and a heating means (6) for preheating and softening the foam sheet (S). It is composed of a male mold ('7), etc., which presses the heat-softened foam sheet into a female mold (3) to form it into a predetermined shape.

To explain in more detail, the paper (P) running and fed by the lamination material supplying means (1) consists of a plurality of pre-cut halves with partially uncut portions (P2) as shown in FIG. It is a band-shaped thing having a punched part (PL), and the outline shape of the half punched part (Pl) is similar to that of the packaging material (A) (seventh
(see figure), and a hot-melt adhesive is applied to the upper surface of the paper (P), which is the surface to be joined to the foam sheet (S).

Further, the paper (P) has a developed shape in which a side wall piece (30P) is coupled with the remaining base piece (eop) around the bottom piece (20P), and the bottom piece (20P) and the side wall piece (
30P), a bending cut (40P) is formed. Furthermore, there are cutouts (
50P) is formed. In addition, the above cut (40P)
The paper (P) is perforated through the paper (P), and can also function as a ventilation section that allows air to flow in vacuum forming described later. Further, the supply means (1) is constituted by a chain conveyor (10) that can support both sides of the paper (P), and the drive unit (
11) is intermittently driven by a predetermined stroke at a time (
(See Figure 4). Then, the paper (P) is supplied to the above-mentioned supply means (1
) is sequentially unrolled from the roll (P3) to form a female mold (3).
supplied to the side. Reference numeral (12) denotes a guide member, which is formed to have a U-shaped cross section in order to guide the traveling of the chain conveyor (lO) and paper (P).

The raw material supply means (2) for foam sheets, etc. is constituted by a chain conveyor (20) similar to the above-mentioned paper supply means (1), and the foam sheet (S) is supplied above a predetermined portion of the paper (P). It intersects with a chain conveyor (lO) in order to supply it. Reference numeral (22) denotes a guide member, which is formed to have a U-shaped cross section in order to guide the movement of the chain conveyor (20) and the foam sheet (S).

The female mold (3) is placed below the intersection of the paper (P) and the foam sheet (S) (see Figure 3), and is driven by a drive mechanism (not shown) such as a cylinder to remove the paper (P). It is possible to advance to the foam sheet (S) side from below.

The female mold (3) has a plurality of molding parts (31) in order to simultaneously mold half-punched parts (Pl) of paper (P) in predetermined sections.
is formed.

The loading means (4) loads the paper (P) from the deep inside of the female mold (3).
) side, the vacuum suction part 14 (40) can be advanced at different timings, and the young suction part (41) at the tip thereof is arranged flush with the inner deep part of the female mold (3). ing. The loading means (4) is connected to each molding part (3) of the female mold (3).
1), each half-punched part (PI) of the paper (P) supplied to the upper part of the female mold (3) can be sequentially and individually attracted and drawn into the female mold (3).

The paper (P) can be loaded into the forming section (31) of the female mold [3] by sequentially pulling the paper (P) into the forming section (31) at different timings in the order in which the paper (P) advances. At this time, the paper (P) swells around the bottom piece (20P), and the paper (P) has a cutout part (50P) for raising it up.
P) are sequentially removed, and the molded portion (31) is loaded with the cutout side ends facing each other and being joined. Also, the side wall piece (30P) of paper (P) is attached to the female molding part (3
Since it comes into contact with the peripheral wall of 1), the papers (P) can be sequentially loaded while the side wall pieces (30P) are raised and bent along the cuts (40P).

The surplus portion removal means (5) includes a chain conveyor (50) provided in series with the paper etc. supply means [1], and a female die (
3) A cutter (51) that cuts the paper (P) fed upward at predetermined intervals, and the chain conveyor (50) is driven by a drive unit (52) at predetermined timings. (See Figure 4).

The heating means (6) is provided in the middle of the chain conveyor (20), adjacent to the female mold (3), and is used to heat the foam sheet (S) supplied by the chain conveyor (20).
can be softened by preheating to the molding temperature. This heating means (6) can be configured, for example, by a heating furnace incorporating a heater.

The male mold ['7] is provided above the foam sheet (S) facing the female mold (3), and can be lowered by a predetermined stroke by a drive mechanism such as a cylinder (not shown). It has become. The male mold (7) has the same number of molding parts (71) as the molding parts (31) of the female mold (3).

Alternatively, a plug-type male mold may be used.

According to the manufacturing apparatus having the following configuration, the supply means (1) for paper, etc.
The paper (P) can be sequentially supplied by the paper (P), and the foam sheet (S) can be sequentially supplied by the original fabric supply means (2) such as a foam sheet between the female mold (3) and the male mold opening. During the supply of the sheet (S), the foamed sheet (S) can be heated and softened by the heating means f61 for preheating.

Therefore, first, a vacuum suction member (40) as a loading means (4) is advanced toward the paper (P) side from the innermost part of each molding part (31) of the female mold 3), and the half-punched part Vacuum tube (Pl) individually in sequence. Next, the vacuum suction member (4
0) is retreated to the original position, and the half-punched parts (Pl) are drawn into each molding part (31) of the female mold (3). As a result, the half-punched part (PL) is formed by cutting the uncut part (P2) and forming the molded part (3) of the female die (3) as a piece of paper (P6).
1) will be loaded in sequence (see Figure 5). At this time, the peripheral part of the paper piece (P8) can be bent upright along the peripheral wall of the female molding part (31).

In this state, the cutter (51) of the surplus portion removing means (5)
is lowered to separate the excess paper part (P4) as the punched remaining part of the paper piece (P6) described in No. 1 and the unprocessed part (P5) on the chain conveyor (lO) side, and then the chain conveyor (
50) to place the surplus portion (P4) of the paper into the female mold (
3) Discharge from the upper position (see Figure 4).

Then, with the female mold (3) raised and its upper surface in contact with the foam sheet (S), the male mold ('7) is advanced from above the foam sheet (S), and the foam sheet ( A predetermined portion of S) is pushed into the molding part (31) of the female mold (3) and molded into a bulging shape along the molding part (31) and the paper piece (P6) (see FIG. 6). At this time, since adhesive has been applied to the paper strip (P6) in advance, the foam sheet (S) is molded at the same time as the paper strip (P6) in the female mold (3) and the foam sheet (S) are formed.
S) can be firmly integrated by joining them.

Next, after separating the female mold (3) and the male mold opening, the chain conveyor (20) of the raw fabric supply means [2] such as a foam sheet
is driven to move the integrally molded product (B) of the paper piece (P6) and the foamed sheet (S) obtained above by a predetermined stroke. At this time, the unprocessed portion of the foam sheet (S) is supplied above the female mold (3). Then, the molded product (B) is cut at predetermined intervals by a cutter (23) provided at a predetermined portion of the chain conveyor (20), and after being collected, the foamed sheet (S) is trimmed. ), a piece of paper (P
A packaging material (A) with a bulge (P) in which 6) is laminated can be obtained (see FIG. 7). By repeating the above operations, the packaging material (A) can be manufactured continuously and efficiently.

Note that the above trimming can of course be performed on the chain conveyor (20).

The apparatus for producing a cushioning packaging material of the present invention is not limited to the above-mentioned embodiments, and includes, for example, supplying means (1) for laminated materials such as paper, raw material supplying means ['2J] for laminated materials such as paper, and rollers. The male mold (7) is equipped with an air injection port in order to use pressure forming when forming the single package sheet (S), and the female mold (3
) may be provided with a vacuum suction port, or the male mold (7) may be made of a flat plate, etc., and various design changes may be made without changing the gist of the invention.

Since the packaging material (A) is formed by laminating paper (P) at the same time as the packaging material (Al) is formed, such as a foamed sheet (S), it exhibits a good sense of unity and has a beautiful appearance. Also,
The packaging material (A1) can exhibit good heat insulation properties, formability, etc., similar to conventional foam sheet packaging materials, and the paper (P) has good printability, tear resistance, heat resistance, etc. It can also exhibit excellent usage effects that cannot be achieved conventionally.

In addition, since the main packaging material (Al) and paper (P) are integrally molded, the bonding strength is much higher than when paper (P) is attached after the fact. It also has excellent durability over time. Moreover, it is also possible to facilitate the production of the packaging material (A).

As an example, the cushioning packaging material (A) includes, along the longitudinal direction, a relatively wide rectangular main body piece (100) with a bulge (P), and a relatively narrow elongated side. pieces (20
0), Main body piece (300) with bulge (P) as above
, the side piece (400) and also the narrowest cover piece (
500), V-shaped bent grooves (e
oo). Naori bar piece (
500) may be connected to the end of the main piece (100) instead of the end of the side piece (400).

The above packaging material (A) was assembled by bending each month at right angles in turn and assembling the main body pieces (100) and (300) into a rectangular frame shape so that they faced each other, and further assembling the cover piece (500). Each month (100) (200) (300) (400)
(In the figure, it is the outer surface of the main piece (100), but it may also be the side piece (400).) The buffer packaging material (A) is assembled. There is (
(See Figure 8). In addition, if the cover piece (500) is bonded to the outer surface of the main body piece (100) with adhesive or adhesive tape, the packaging material (A) can be fixed without being disassembled. Furthermore, the packaging material (A) may be fixed by providing an appropriate engagement mechanism, or by shrink-covering the folded and assembled packaging material (A) with a heat-shrinkable film.

The number and formation position of the bulges (P) differ depending on the shape of the stored article. For example, if the stored article is small and lightweight, one small bulge may be sufficient. If the article is large or has a complicated shape, it is necessary to form a plurality of bulges.

In addition, it is not necessary to form the height of each bulging part to be the same, and the height of each bulging part does not need to be formed to be the same.
They may be formed with a mixture of various heights.

Next, among the materials forming the packaging material (A), as the synthetic resin sheet that becomes the main material (S), foamed or non-foamed sheets of various synthetic resins that are used as ordinary packaging materials can be used. Particularly suitable are, for example, highly polymerized foamed polystyrene sheets containing butadiene, and relatively hard foamed sheets such as foamed polystyrene sheets, and polyolefin foamed sheets such as foamed polyethylene sheets and foamed polypropylene sheets. A multilayer sheet laminated with a binder such as ethylene-vinyl acetate copolymer (EVA) is suitable as it has both rigidity and flexibility. This can also be done with laminated sheets.

Further, if each of the above synthetic resin sheets is subjected to antistatic treatment, it will be effective in preventing the adhesion of dirt and dust.

Next, as the laminating sheet, any ordinary packaging material can be freely used, but in the case of paper (P), a relatively stiff material is preferable in order to maintain the shape and prevent deformation of the packaging material (A). This provides excellent protection for stored items. Furthermore, if the outer surface of the paper (P) is suitably printed, the display effect when displaying and selling stored items will be even better, which is preferable. In addition, various synthetic resin sheets for lamination can also be used.

As the above-mentioned adhesive, a thermoadhesive adhesive that exhibits an adhesive effect by the heat during molding is suitable, but in addition, pressure-sensitive adhesives that exhibit an adhesive effect by the pressure applied during molding, and , other adhesives can also be used. moreover,
Although the cut (40P) in the paper (P) is not necessarily required, it is preferable to provide the cut (40P) in order to accurately and easily bend the side wall piece (30P). However, if the cut (40P) is omitted, paper (P) provided with other ventilation parts such as through holes is used.

Regarding the bottom of the main body of packaging material (AI), paper (P) may be laminated only on the periphery excluding a predetermined central area. In this case, paper (P) with wide holes formed in the center may be laminated. ), and the above-mentioned through-holes may be used as ventilation parts. In addition, various changes can be made without changing the gist of the invention, such as using a semi-punched paper with non-cut portions at key points as the paper (P).

Effects> As described above, according to the apparatus for producing cushioning packaging materials of the present invention, since the paper is laminated at the same time as the packaging material is formed, the two are completely in contact with each other, resulting in strong joint strength and ease of use. A cushioning packaging material with excellent durability over time can be obtained. Furthermore, it is possible to obtain a good sense of unity and a favorable appearance. In addition, the surface paper makes it possible to ensure good printability, tear resistance, heat resistance, and the like.

Moreover, according to the manufacturing apparatus of the present invention, a laminating sheet such as paper is set in advance in a female mold so as to be compatible with the swelling molding of a synthetic resin sheet, and the synthetic resin sheet is molded into an appropriate bulging shape. This device is capable of laminating synthetic resin sheets and laminating sheets together by overlapping them and pressing them together, so compared to laminating them before preheating and molding, As the sheet, there is the convenience of being able to use sheets made of various materials without being limited to materials that do not deform at the preheating temperature of the synthetic resin sheet. Moreover, molding and lamination can be processed in the same process,
This device can easily remove excess parts other than cushioning packaging material, and is useful for simplifying processes and saving equipment space.

In addition, as a manufactured product, a synthetic resin sheet molded body with a bulged shape and paper, etc. with a corresponding bulged shape can be integrally joined, and various items to be packaged can be wrapped with one sheet of cushioning packaging material. can be packaged compactly and with good cushioning properties.

As described above, the apparatus of the present invention can exhibit the excellent effect of efficiently providing packaging materials continuously and in large quantities with easy packaging operations.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an apparatus for producing cushioning packaging materials of the present invention, Fig. 2 is a perspective view of unfolded paper that becomes a laminated material, Fig. 3 is a side view of the apparatus, and Fig. 4 is a paper etc. Fig. 5 is a sectional view of the main part showing the paper loaded state, Fig. 6 is a sectional view of the main part showing the forming process, and Fig. 7 is the formed packaging. FIG. 8 is a cross-sectional view of the packaging material in use. (1)... Means for supplying laminated material such as paper, (2)... Means for supplying raw material such as foam sheet, (3)... Female mold, (4)
... Loading means for paper, etc., (5) ... Excess removal means for paper, etc., (6) ... Heating means, (Sword ... Male type, (P)
...Paper to be laminated material, (S)...Foam sheet to be mainly used as packaging material, (A)...Packaging material, (Al)...Packaging material mainly, (F)...Bulge Department. Patent applicant Sekisui Plastics Co., Ltd. Figure 6 Figure 8

Claims (1)

[Claims] 1. Provide a non-cut part and add a spare part to the unfolded shape. Stacks of paper, etc. with cut-out semi-punched parts Lamination in which long materials for layers are run intermittently Mainly materials supply means and long foam sheets, etc. The above raw synthetic resin sheets are laminated together. Run intermittently across the long material for raw material supply means and synthetic resin sheet raw material At the intersection of the long material for lamination and the long material for lamination, A female mold provided opposite to the long material for the layer, Vacuum suction of half punched parts of long materials for lamination In this state, pull it into the female mold and half punch out. Place the part into the female mold with a part of it bent. The loading means for loading the Separate the uncut part from the subsequent unprocessed part Eliminate surplus from the opposite position of the female mold part removing means and the original synthetic resin sheet. A heating means for heat softening, and a heat softening means. Push the sheet into the female mold to remove the bulge. At the same time as molding, the laminated material in the female mold and a synthetic resin sheet are joined and integrated. It is characterized by having a male type that allows Manufacturing equipment for cushioning packaging materials.