JPH11179335A - Method for separating layer of laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of separating a layer of a laminate for enabling reuse of each layer constituting a sheet-like laminate such as building interior material and the like. SOLUTION: At least one layer of a sheet-like laminate consisting of a plurality of layers is cut and separated by a wide-width rotative body 5 having a cutting edge 4 on an outer circumference 5a. The sheet-like laminate comprises at least a base 1 selected from the group of paper, textile, knit item, nonwoven fabric and glass fiber mat and a pattern forming layer made of foamed or nonfoamed synthetic resin. A surface layer 2 comprises a base 1 of paper and a pattern forming layer of foamed vinyl chloride based composition. At least one layer of the sheet-like laminate is continuously cut and separated along a longitudinal direction by a cutting-separating device 6 provided with a rotative body 5, a transfer mechanism 8 for transferring the sheet-like laminate to a rotative body 5 side and a takeover mechanism 9 for taking over the laminate after cut and separation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for peeling a layer of a laminate used for interior materials of buildings such as wallpaper.

[0002]

2. Description of the Related Art It has been known that a sheet-like laminate composed of a plurality of layers is used as an interior material of a building such as a wallpaper. On the surface layer constituting the design surface of the sheet-like laminate, a pattern forming layer or the like is formed in a predetermined design by a concavo-convex pattern or the like. May occur.

[0003] In addition, even a finished product having no defective manufacturing may remain in stock as it is without being shipped or used due to the trend of design trends in the market.

[0004] However, such defective products and inventories are discarded as industrial wastes without being effectively used, so that there is a problem that resources are wasted.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to reuse each layer constituting a sheet-like laminate such as an interior material of a building. An object of the present invention is to provide a method for peeling a layer of a laminate.

[0006]

According to a first aspect of the present invention, at least one layer of a sheet-like laminate comprising a plurality of layers is provided with a cutting blade provided on an outer peripheral surface thereof. It is to separate by cutting with a wide rotating body.

[0007] According to a second aspect of the present invention, the sheet-like laminate comprises a base material selected from the group consisting of paper, woven fabric, knitted fabric, non-woven fabric, and glass fiber mat;
Alternatively, at least a pattern forming layer made of a non-foamed synthetic resin is provided.

[0008] According to a third aspect of the present invention, the base material is made of paper and the pattern forming layer is a surface material made of a foamed vinyl chloride composition.

According to a fourth aspect of the present invention, the cutting blade is provided by spirally winding a sawtooth wire on the outer peripheral surface of the rotating body.

According to a fifth aspect of the present invention, the cutting blade is a flat blade formed on the outer peripheral surface of the rotating body.

According to a sixth aspect of the present invention, the cutting blade is provided by forming cutting irregularities on the outer peripheral surface of the rotating body.

[0012] The means according to claim 7 is characterized in that the cutting device includes the rotating body, a feed mechanism for feeding the sheet-like laminate to the rotating body side, and a take-off mechanism for taking out the sheet-like laminate after cutting and peeling. An object of the present invention is to cut and peel at least one layer of the sheet-like laminate continuously along its longitudinal direction by a peeling device.

[0013] The means of claim 8 is characterized in that one of the rotating body and the feed mechanism is configured to be adjustable in position, so that the cutting peeling depth by the rotating body can be finely adjusted. It is in.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, the method of peeling the layers of the laminate according to this embodiment includes, for example, a base material 1 made of paper and a surface material (pattern forming layer) 2 made of a foamed vinyl chloride-based composition. The surface layer material 2 of the wallpaper (sheet-like laminate) 3 composed of two layers of:
The cutting and peeling device 6 provided with the wide rotating body 5 provided in the above-mentioned manner continuously cuts and peels along the longitudinal direction.

As shown in FIG. 2, the wallpaper 3 is obtained by laminating a surface material 2 made of a foamed vinyl chloride composition as a pattern forming layer on a surface 1a of a base material 1 made of paper, for example.

The substrate 1 is not limited to paper as in this embodiment, but may be glass fiber mats, natural fibers such as cotton, synthetic fibers such as polyester, asbestos or glass. A woven fabric, a knitted fabric, or a nonwoven fabric made of an appropriate fiber such as an inorganic fiber such as a fiber may be used. The pattern forming layer is also formed of various foamed and / or non-foamed synthetic resins other than the surface layer material 2 made of the foamed vinyl chloride-based composition, that is, foamed or unfoamed at a predetermined magnification, or A foamed synthetic resin and a non-foamed synthetic resin are appropriately compounded by lamination or dispersion. Furthermore, the sheet-like laminate also includes various kinds of sheet-like laminates including two or three or more layers other than the wallpaper 3.

As shown in FIG. 4, the rotating body 5 is formed in a wide drum shape, and a cutting blade 4 is provided on its outer peripheral surface 5a by, for example, spirally winding a saw-tooth wire 7. Have been.

As shown in FIG. 1, the cutting and peeling device 6 includes a rotating body 5 arranged at a predetermined position and rotating at a high speed, a feed mechanism 8 for sending the wallpaper 3 to the rotating body 5 side, Take-up roll (take-up mechanism) that winds up the wallpaper 3
9 is provided.

As shown in FIGS. 1 and 3, the feed mechanism 8 includes, for example, a feed plate 10 arranged at a predetermined interval behind the rotating body 5 and a feed plate 10.
And a feed roll 11 arranged at a distance slightly smaller than the thickness (T1 + T2) of the wallpaper 3.

The feed plate 10 is formed, for example, in the shape of a wide plate having a predetermined thickness, and a projection 12 having a mountain-like cross section is provided on the upper edge of the front side. This protrusion 12
Is formed in an arc shape so that the wallpaper 3 can be smoothly fed by the rotation of the feed roll 11. In addition, the front side of the protruding portion 12 is a slope 12 b facing the rotating body 5, and the wallpaper 3 is sent downward so as to be in close contact with the protruding portion 12. That is, for example, the surface material 2 on the surface side of the wallpaper 3 sent to the slope 12b is cut off by the rotating body 5.

If necessary, the feed plate 10
If any one of the feed roll 11 and the feed roll 11 is configured to be position-adjustable, the distance between them can be finely adjusted, so that there is an advantage that it is possible to cope with sheet-like laminates of various thicknesses. Further, if any one of the feed mechanism 8 including the feed plate 10 and the feed roll 11 and the rotating body 5 is configured to be position-adjustable as needed, the cutting peeling depth by the rotating body 5 can be reduced. Since it can be finely adjusted, there is an advantage that it is possible to cope with sheet-like laminates of various thicknesses, and it is possible to precisely cut and peel off only a target layer. Further, since the distance between the rotating body 5 and the feed mechanism 8 can be increased, there is an advantage that the wallpaper 3 can be easily set on the cutting and peeling device 6.

The take-off roll 9 is arranged, for example, below the feed plate 10 so as to be able to take up the cut and peeled wallpaper 3 sent out by the feed mechanism 8. Note that the take-off mechanism is not limited to the take-up roll 9 as in this embodiment, and may be, for example, a mechanism that simply feeds the sheet-like laminate such as the wallpaper 3 without winding it. .

Here, the wallpaper 3 is often stored in the state of being wound in a roll shape. Therefore, in the cutting and peeling process, the raw material roll 3a is kept as it is, and What is necessary is just to arrange | position so that it may be rotatable to the back side etc. and may be sent between the said feed plate 10 and the feed roll 11.

Next, the operation of the cutting and peeling apparatus 6 configured as described above will be described. First, the wallpaper 3 is pulled out from the raw material roll 3a in a state where the distance between the rotating body 5 and the feed mechanism 8 is widened as necessary, and the distance between the feed plate 10 and the feed roll 11 is widened. After the end is inserted between 10 and the feed roll 11, the distance between them is reduced to such an extent that an appropriate pressure is applied to the wallpaper 3. Next, if the feed roll 11 is appropriately rotated and the end of the wallpaper 3 is sufficiently pulled out and wound around the lower take-up roll 9, the setting of the wallpaper 3 is completed.

In this embodiment, since the surface material 2 made of the foamed vinyl chloride composition of the wallpaper 3 is cut off, the surface material 2 faces upward on the feed plate 10. However, when the substrate 1 is to be cut and peeled, the substrate 1 may be set so that the substrate 1 faces upward.

Then, the rotating body 5 is operated to rotate at high speed, and the feed roll 11 and the take-up roll 9 are also operated and rotated to move the position of the rotating body 5 or the feeding mechanism 8 so as to be spaced apart. 3, the surface material 2 on the surface side of the wallpaper 3 is cut off by the cutting blade 4 of the rotating body 5 as shown in FIG.

Here, the distance between the tip 4a of the cutting blade 4 of the rotating body 5 rotating at a high speed and the slope 12b of the projecting portion 12 of the feed plate 10 is determined by the thickness T1 of the base material 1 of the wallpaper 3.
If the fine adjustment is made so as to have almost the same size as the above, the cutting peeling depth becomes almost the same as the thickness T2 of the surface material 2, so that only this surface material 2 is continuously cut and peeled along its longitudinal direction. can do. In the case where the sheet-like laminate such as the wallpaper 3 is composed of three or more layers, even if two or more of the layers are cut and peeled at the same time, fine adjustment is similarly performed according to their total thickness. I just need.

The wallpaper 3 after being cut and peeled as described above has substantially only the substrate 1 remaining, and is continuously wound up by the take-off roll 9. In addition, since the surface material 2 is cut and peeled into a powder state or the like by the rotating body 5, there is an advantage that the purity can be further increased by further separating the surface material by wind power if necessary.

As described above, at least one layer of the sheet-like laminate composed of a plurality of layers such as the wallpaper 3 is cut and peeled by the wide rotating body 5 having the cutting blade 4 provided on the outer peripheral surface 5a. The layer to be cut off and the remaining layer can be easily separated. Therefore, they can be reused for other uses without discarding them, and there is an advantage that resources can be effectively used.

Further, as in this embodiment, the sheet-like laminate is made of a foamed and / or non-foamed composite with a base material selected from the group consisting of paper, woven fabric, knitted fabric, nonwoven fabric, and glass fiber mat. In the case where at least the pattern forming layer made of resin is provided, there is an advantage that each layer such as the interior material of a building, which has been conventionally discarded in large quantities, can be reused. In this case, when the base material 1 is made of paper and the pattern forming layer is the surface material 2 made of the foamed vinyl chloride-based composition, the layers of wallpaper and the like that have been conventionally discarded in large quantities are reused. There is an advantage that can be.

Further, when at least one layer of the sheet laminate such as the surface layer material 2 is continuously cut and peeled along the longitudinal direction by the cutting and peeling device 6, the layer to be cut and peeled and the remaining layer are separated. There is an advantage that the layer can be efficiently separated in a short time.

In addition, when the cutting blade 4 is provided by spirally winding the saw-toothed wire 7 on the outer peripheral surface 5a of the rotating body 5, the cutting efficiency is good, so that various cutting blades are provided. There is an advantage that it can correspond to a sheet-like laminate.

As the cutting blade 4, besides using the sawtooth wire 7, for example, as shown in FIG. 5, a flat blade 13 formed on the outer peripheral surface 5 a of the rotating body 5 may be used. In this case, since the cutting and peeling can be performed more flatly, there is an advantage that the efficiency of separating the layer to be cut and separated from the remaining layer is higher. Here, in the example shown in FIG.
Are formed in parallel to the axial direction of the rotating body 5, but may be formed in a spiral shape or the like, or may be formed in a stepped manner with a predetermined width.

Further, as shown in FIG.
May be provided by forming the cutting irregularities 14 on the outer peripheral surface 5a of the rotating body 5, and in this case, since the cutting can be finely separated, there is an advantage that the sorting efficiency is further increased. Here, the cutting irregularities 14 may be so-called file-like irregularities formed on the outer peripheral surface 5a of the rotating body 5, or may be formed by attaching an abrasive or the like.

As described above, the cutting and peeling device 6 described in this embodiment is merely an example, and the configuration thereof is not particularly limited, and various conventional techniques can be used.

[0036]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

As the sheet-like laminate, a wallpaper (manufactured by Kanto Leather Co., Ltd., made up of a paper base material (flame retardant paper) and a surface layer material made of a foamed vinyl chloride-based composition (expansion ratio: 3 times). Product name "Hawtaka") was used.

An opener (trade name "Super Opener" manufactured by Nippon Spindle Manufacturing Co., Ltd.) was used as a cutting and peeling device, and the surface layer side of the wallpaper was cut and peeled. In addition, the powdery material generated by this cutting and peeling was applied to a wind separator (trade name "closed circulation type wind separator" manufactured by Nippon Senki Co., Ltd.) to obtain a powder of a surface material having high purity.

The composition (weight percentage) of the powdery surface layer material obtained after the above-mentioned air separation was measured. The results are shown in Table 1 below.

[0040]

[Table 1]

[0041]

As described above, according to the first aspect of the present invention, at least one layer of the sheet-like laminated body composed of a plurality of layers is cut off by a wide rotating body having a cutting blade provided on its outer peripheral surface. Therefore, the layer to be cut off and the remaining layer can be easily separated. Therefore, they can be reused for other uses without disposing of them,
There is an advantage that resources can be effectively used.

According to the second aspect of the present invention, the sheet-like laminate is formed of a base material selected from the group consisting of paper, woven fabric, knitted fabric, non-woven fabric, and glass fiber mat, and a foamed and / or non-foamed synthetic material. Since at least the pattern forming layer made of resin is provided, there is an advantage that each layer such as the interior material of the building, which has been conventionally discarded in large quantities, can be reused.

According to the third aspect of the present invention, the base material is made of paper, and the pattern forming layer is a surface material made of a foamed vinyl chloride-based composition. There is an advantage that each layer can be reused.

According to the fourth aspect of the present invention, the cutting blade comprises:
Since the saw-toothed wire is provided by spirally winding the outer peripheral surface of the rotating body, there is an advantage that cutting efficiency is good and therefore, it is possible to cope with various sheet-like laminates.

According to the fifth aspect of the present invention, the cutting blade comprises:
Since the flat blade is formed on the outer peripheral surface of the rotating body, it can be cut and peeled more flatly, so that there is an advantage that the efficiency of separating the layer to be cut and separated from the remaining layer is higher.

According to the sixth aspect of the present invention, the cutting blade comprises:
Since it is provided by forming irregularities for cutting on the outer peripheral surface of the rotating body, cutting and peeling can be performed more finely, and therefore, there is an advantage that the sorting efficiency is higher.

According to the seventh aspect of the present invention, the rotating body,
A feed mechanism for feeding the sheet-like laminate to the rotating body side,
By a cutting and peeling device provided with a take-off mechanism for pulling out the sheet-like laminate after cutting and peeling, since at least one layer of the sheet-like laminate is continuously cut and peeled along its longitudinal direction, There is an advantage that the remaining layer can be efficiently separated in a short time.

According to the eighth aspect of the present invention, since one of the rotating body and the feed mechanism is configured to be adjustable in position, the depth of cutting separation by the rotating body can be finely adjusted. There is an advantage that it can be applied to sheet-like laminates of various thicknesses and that only the target layer can be cut and peeled with high accuracy. Further, since the distance between the rotating body and the feed mechanism can be increased, there is an advantage that a sheet-like laminate such as wallpaper can be easily set in the cutting and peeling apparatus.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a cutting and peeling apparatus used in a method of peeling a layer of a laminate according to this embodiment.

FIG. 2 is an enlarged sectional view of a main part of the wallpaper of FIG. 1;

FIG. 3 is an enlarged cross-sectional view of a main part showing a state where a surface material layer is cut off by the rotating body of FIG. 1;

FIG. 4 is a schematic perspective view of the rotating body of FIG. 1;

FIG. 5 is a schematic perspective view showing another example of a rotating body.

FIG. 6 is a schematic perspective view showing another example of the rotating body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Surface material (pattern forming layer) 3 Wallpaper (sheet-shaped laminated body) 4 Cutting blade 5 Rotating body 5a Outer peripheral surface 6 Cutting peeling device 7 Saw-tooth wire 8 Feeding mechanism 9 Pulling roll (pulling mechanism) 13 Flat blade 14 Cutting irregularities

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI B29K 309: 08 311: 12

Claims (8)

[Claims] 1. A method for separating layers of a laminate, wherein at least one layer of a sheet-like laminate comprising a plurality of layers is cut and separated by a wide rotating body having a cutting blade provided on an outer peripheral surface thereof. 2. A sheet-like laminate comprising: a base material selected from the group consisting of paper, woven fabric, knitted fabric, non-woven fabric, and glass fiber mat; and a pattern forming layer made of a foamed and / or non-foamed synthetic resin. The method for peeling a layer of a laminate according to claim 1, comprising at least: 3. The method according to claim 2, wherein the base material is made of paper, and the pattern forming layer is a surface material made of a foamed vinyl chloride-based composition. 4. The laminate according to claim 1, wherein the cutting blade is provided by spirally winding a sawtooth wire around an outer peripheral surface of the rotating body. Method of peeling layer. 5. The method according to claim 1, wherein the cutting blade is a flat blade formed on an outer peripheral surface of the rotating body. 6. The peeling of the layer of the laminate according to claim 1, wherein the cutting blade is provided by forming cutting irregularities on an outer peripheral surface of the rotating body. Method. 7. The sheet laminating apparatus according to claim 1, wherein said sheet laminating apparatus includes: said rotating body; a feeding mechanism for feeding said sheet laminated body to said rotating body side; The method for separating layers of a laminate according to any one of claims 1 to 6, wherein at least one layer of the body is continuously cut off along the longitudinal direction. 8. The apparatus according to claim 7, wherein one of the rotating body and the feed mechanism is configured to be adjustable in position, so that the depth of the cutting peeling by the rotating body can be finely adjusted. The method for peeling off the layers of the laminate.