JPH06338B2 - Expanded polystyrene sheet separator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for separating expanded polystyrene sheets,
The present invention relates to an apparatus capable of separating and recovering a colored portion and a non-colored portion by separating them into layers.

<Prior Art> Conventionally, most of expanded polystyrene sheets having a printed and / or colored layer on one side, for example, trimming loss sheets after sheet molding, are collected as scraps, regenerated and pelletized. In this case, compared to the printed and / or colored layers, the expanded polystyrene sheet layer thickness ratio as scrap is far higher in the uncolored ground color layer (45 to 90%), but pelletized. Then, the color penetrates and does not become white, and the pellet becomes colored, so that the reuse range is narrowed and the value as a recycled product becomes low.

Considering that the scrap generation rate for the original sheet is in the range of 10 to 40% in forming the expanded polystyrene sheet, the uncolored layer with a high layer thickness ratio is separated from the layer of the colored part in the expanded polystyrene sheet. It was also required from the economical point of view to regenerate it. In particular, when the printed and / or colored layer is a laminated film layer, the laminated film layer is often different from the expanded polystyrene layer, and therefore it is highly necessary to separate and regenerate.

<Object> Therefore, in view of the above-mentioned conventional circumstances, an object of the present invention is to provide an apparatus for easily separating an uncolored layer from a layer of a colored portion in a foam polystyrene sheet with a heterogeneous layer such as a laminated film. is there.

<Structure> An apparatus for achieving the above-mentioned object is provided with a supply unit that pulls up a sheet of a polystyrene foam sheet with a heterogeneous layer such as a single-sided laminated film from a hopper by a belt with needles and pulls it upward to convey it. The determination unit configured to determine the front and back of the conveyed sheet by the difference in front and back physical properties between the rotating rolls, a heterogeneous layer such as a laminate film for the sheet conveyed from the determination unit, and expanded polystyrene. A separating device for an expanded polystyrene sheet, characterized in that it is provided with a separating part for separating the layer.

<Embodiment> Next, an embodiment of the present invention will be described with reference to the drawings.

First, FIGS. 1 and 2 exemplify what is used as the material sheet piece (A), and the material sheet piece (A) is a layer obtained by printing and / or coloring a laminate film layer (20) on one side. The expanded polystyrene sheet (10) having the above is used.

As shown in FIG. 2, the material sheet piece (A) has a printed and / or colored side (20a) of the laminated film layer (20) (hereinafter, only colored for convenience sake) on the expanded polystyrene sheet (a). 10) is the inner surface facing, the film has various laminated films, polystyrene, polyethylene, polypropylene, other non-foaming synthetic resin, aluminum foil, a binder layer between the polystyrene foam sheet (e.g. When the film is polyethylene, it may be laminated via EVA or the like. The coloring of the laminated film layer (20) to be the coloring layer is that which is transferred or penetrated into the expanded polystyrene sheet (10) part of the uncolored part due to the solvent effect of the printing ink, and is colored with the coloring layer. When separated into a non-colored layer, the color of the laminated film layer (20) containing a part (10a) of the expanded polystyrene sheet that is transferred or penetrated (about 50 μm) and the non-colored part Using a cutting blade for slicing the expanded polystyrene layer (10b) (C)
-It will be separated at the position of (C ').

Next, the apparatus of the present invention shown in FIGS. 3 and 4 will be sequentially described. First, the expanded polystyrene sheet with a laminated film to be the material sheet piece (A) is the first.
As shown in the figure, a trimming loss sheet after sheet forming is used. For example, the holes of the clamp marks (1) remain in the trimming loss sheet on both sides in the longitudinal direction.

Feeding part of material sheet piece (A) by trimming loss sheet
Vibrating hopper (31) via feed hopper (30) in (I)
A belt (33) with a needle (32) feeds it upward from the inside and feeds it to a side of the judgment rolls (40) (40) in the judgment section (II) by a curved direction change guide (34).

The physical properties of the laminated film (20) side and the expanded polystyrene sheet (10) side with this judgment roll (40) (40) are utilized by making use of the difference in surface condition such as friction resistance to the judgment roll (40) (40) side. Determine the front and back of the material sheet piece (A) that is introduced indiscriminately. That is, with the laminate film (20) side as the front side, when entering with the front side facing up, the material sheet piece is compressed by the judgment roll and curled. At that time, it will always curl to the film side and warp up, and the front and back will be reversed to the cutting blade (50) that will become the separation part (III) via the guide guide cylinder (41) (41 ') that twists by 90 ° In this state, the film side is fed downward. On the contrary, it is the same as the film side, the front side is downward and it passes through the judgment rolls (40) (40), it curls to the film side and it is the lower direct guide guide tube (42) (42) Cutting blade which becomes separation part (III) after passing through ')
It is sent to (50). This cutting blade (50) is a filter blade that is endlessly rotated in a direction orthogonal to the feeding direction of the material sheet piece (A), and its blade edge is adjusted in advance to a position suitable for slicing. is there.

The thickness of the material sheet piece (A) includes the laminated film
In the case of about 1.5 to 5.2 mm, the laminated film side including the expanded polystyrene layer part where the colored part is transferred or penetrated is cut to 0.2 to 1.6 mm, and the uncolored expanded polystyrene layer is cut to about 1.3 to 3.6 mm. Will be separated in.

The separated sheets are fed to the respective crushers (60) (60 ') of the collecting section (IV), crushed and pneumatically transported, and collected in a collecting hopper (not shown).

By the above-mentioned implementation, the laminated film (20) layer in a state including the expanded polystyrene sheet layer part (10a) in which coloring has permeated, and the expanded polystyrene layer which is not colored and is not printed and / or colored It can be separated into (10b).

Incidentally, in the examples, the hopper (30) in the supply section of the figure (I)
The material sheet piece (A) enters the vibrating hopper (31) that is a vibration type, and the air is sucked by the blower (35), which is the suction part, and the material is fed by the belt with a needle (33). Sheet piece
The needle (32) is hooked on the surface of (A) and conveyed upward. When there are two lines (X) and (Y) as shown in FIG.
2) is installed with a pitch of 1.5 m shifted by half a pitch on both lines. The belt with needles (33) is at least 3.0 times as long as the material sheet piece (A).

(36) (36) is a roll for pulling up, one side or both sides are sponge rolls, one side is a slide shaft and the other side is pushed by using a spring or the like to prevent the side slip of the material sheet piece (A). There is. The speed of the pulling rolls (36) (36) should be faster than that of the belt with needles (33). Direction change guide
(34) takes a height of 500 mm to make a streamlined curve.
Reference numeral (37) is a blower for supplying air into the guide (34) so that the direction can be easily changed. (38) is an intermediate guide tube, about 20
There is an angle of ° or more, and the material sheet piece (A) is on the inner surface.
It is convenient to stick a fluororesin sheet so that it can be prevented from adhering to
This can be done without this guide tube (38).

Next, the determination rolls (40) and (40) in the determination unit (II) are made of metal or rubber, and both are made of the same material and are of one-side drive or both-speed drive type. Also, upper and lower guide guide tubes
(41) and (42) should have an entrance at a position slightly out of the center of the rolls (40) and (40), and in the upper twist type guide guide tube (41), the material sheet piece (A) should be 90 ° Twisted and sent to the reversing rolls (43) (43), then through the reversing rolls (43) (43), further twisted 90 ° with the twist guide tube (41 ') and turned upside down, and the feed roll (44) (44) Further, while the straight pipe guide (45) is reached, the material sheet piece (A) is sent as it is without being twisted in the guide guide pipe (42) on the lower side. Judgment roll (40) (4) with the intermediate roll (43 ') (43') as the boundary
It is preferable in order to feed the material sheet piece (A) that a space of about 500 mm or more is required between 0) and the feed rolls (44) (44).

In addition, as another embodiment of the judging section (II), as shown in FIG. 5, the material sheet piece (A) is fed by utilizing the peripheral speed difference between the roll (40) and the roll (40 ′). There is also a method of electrically determining the time difference at a predetermined interval (l) after passing through the rolls (40) and (40 ') depending on whether the laminate film (20) side is on the front side or the back side. In this case, there is provided a gate (46) for electrically activating which of the upper and lower guide guide cylinders to enter after the determination.

As yet another embodiment, as shown in FIG.
If the laminate film (20) side is judged to be the front (upper) with two upper and lower parts, it is in the upper area (M), and if the laminate film (20) side is the reverse (lower), it is the lower area. If it is adjusted so that each cutting position for the material sheet piece (A) is the same with the upper and lower cutting blades (50) and (50), it will be in the zone (N). Time
90 ° twist guides (41) (41 ') are not required
(47) (48) and direct delivery rolls (49) (49) will be sufficient.
Also in this embodiment, the judgment rolls (40) and (40) may be capable of making the same judgments as in the previous embodiments. In the figure (80)
Is a collection part on the side including the separated laminated film (20), and (70) is a collection part of expanded polystyrene that remains uncolored.

In addition, the separating device of the present invention can be used for sheets other than trimming loss sheets (for example, molding test sheets, dirty sheets, etc.)
If it is difficult to start from the supply unit of the above-described embodying apparatus, it is possible to directly supply the separation unit by hand and separate it.

In addition, the expanded polystyrene sheet is separated in any case except for a part of the layer to which printing and / or coloring is transferred or penetrated.

<Effect> By using the separating device as described above, it is possible to automatically and surely separate the uncolored expanded polystyrene layer from the printed and / or colored laminated film layer, etc. The expanded polystyrene sheet as it is can be recycled separately from the printed and / or colored part to avoid mixing of the printed and / or colored part in reproduction, and the material of the recycled product can be stabilized. .

In particular, when the printed and / or colored layer is a laminated film layer that is different from the expanded polystyrene layer, the laminate includes a part of the expanded polystyrene layer in which the printed and / or colored layer is transferred or penetrated. By cutting the layer and the expanded polystyrene layer of the part that is not printed and / or colored, the expanded polystyrene sheet that remains uncolored can be reliably separated from other parts such as colored parts and laminated films of different materials. It is convenient for reuse later.

Therefore, the reuse ratio of the non-colored layer having a high layer thickness ratio in the expanded polystyrene sheet is increased, and the economic advantage is also great.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of expanded polystyrene sheet separated by the device of the present invention, FIG. 2 is a partially enlarged sectional view of the same sheet, and FIG. 3 is a schematic side view showing an example of the device of the present invention. FIG. 4 is a schematic plan view of the same device, FIG. 5 is a side view of a determination part of the changing device, and FIG. 6 is a side view of a determination and separation part of the changing device. (A) ... Material sheet piece made of expanded polystyrene sheet, (1) ... clamp trace, (10) ... expanded polystyrene layer, (10a) ... partly expanded polystyrene layer with coloring or transferred, (10b) ... none Expanded polystyrene layer as it is colored, (10c) ... Layer for coloring, etc., (C)-(C ') ... Separation position (I) ... Supply section, (II) ... Judgment section, (III) ... Separation section, (IV) ... Collection section, (33) ... Needle belt, (40) (40) ... Judgment roll, (50) ... Cutting blade.

Claims (2)

[Claims] 1. A supply unit for conveying a sheet made of a foamed polystyrene sheet with a heterogeneous layer such as a one-sided laminated film from a hopper by hooking it with a belt with needles and pulling it upward and conveying the sheet conveyed from the supply unit between rotating rolls. In the determination unit, which determines the front and back by the difference in the physical properties of the front and back in, a heterogeneous layer such as a laminate film with respect to the sheet conveyed from the determination unit, and a separation unit that separates into a foam polystyrene layer. An expanded polystyrene sheet separating device, which is provided. 2. The apparatus for separating expanded polystyrene according to claim 1, wherein a suction section by a blower is introduced near the lower portion of the needle belt of the supply section.