JP2014152441A - Artificial kaya-like material and manufacturing method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an artificial Kaya-like material exhibiting a taste and an appearance closer to natural Kaya by a three-dimensional pattern with large unevenness and having excellent durability as compared with the natural Kaya, and a manufacturing method for the same.SOLUTION: In an artificial Kaya-like material R consisting of a cylindrical body 1 manufactured by extrusion molding of a thermoplastic resin, streak-like recesses and protrusions 11, 11 ... in the longitudinal direction are formed on the surface of the cylindrical body 1 irregularly, and the streak-like recesses and protrusions 11, 11 ... are formed while pushing down them to the side of the cylindrical body when fold-like projections G, G ..., around the cylindrical body, formed in the longitudinal direction in a die of an extruder M are introduced into in a sizing device S.

Description

  The present invention is an improvement of an artificial rod-like material, and more specifically, an artificial rod-like material that exhibits an appearance closer to that of a natural fold due to a three-dimensional pattern with large irregularities, and that is superior in durability to a natural fold, and its production It is about the method.

  As is well known, thatched roofs made of wood such as Susuki and Chigaya need to be replaced after a certain period of time when the damaged roofs are exposed to wind and rain. Costly labor and cost. In addition, natural firewood does not have sufficient durability and strength as a material, and therefore, its use is limited when it is used for interiors and interior materials other than firewood.

  Therefore, in the past, a technique for manufacturing a roof material having an appearance such that a plurality of fences are arranged by resin molding has been proposed (see Patent Document 1), but because the device of the appearance of the molded product was not sufficient, The overall shape and color of the surface were uniform, and the appearance was artificial, and it was impossible to create a natural cocoon atmosphere.

  On the other hand, in the field of resin molding, after extruding a resin material to which a foaming agent has been added from the extrusion molding machine, the molded body is expanded with foaming gas in the external space, and then compressed again with a sizing device, A technique for applying a fine grain pattern on the surface is also known (see Patent Document 2), and a method for producing a substitute for a straw material using this technique is also conceivable.

  However, since the rod-shaped molded body having the above-mentioned wood grain pattern has a low expansion rate in the external space at the time of molding, it is best to attach fine linear grooves to the peripheral surface of the rod, and the surface of the stem of the cocoon is unsatisfactory. The regular pattern could not be expressed. And since the said rod-shaped molded object was a single layer, it was not able to express correctly the cross section of the stalk.

  In addition, a technique for manufacturing an artificial scissors having a modified cross section by a manufacturing method similar to that of the above-described prior art is also known (see Patent Document 3), but the rod-shaped molded body according to this prior art is also more complicated. Although it is possible to mold with a simple cross-sectional shape, it has not been possible to reproduce the stem surface pattern and the natural atmosphere of the stem.

  The applicant has also developed a technique for forming a wrinkle pattern on the surface by inflating the outer layer part into a balloon shape with a foaming agent and squeezing it with a sizing device, and has filed a patent application ( This technique also has room for improvement in order to bring it closer to a real bran material because the wrinkle pattern has small irregularities.

JP-A 63-156153 Japanese Patent Publication No. 48-24821 Japanese Patent Publication No.49-41341 JP 2002-26239 A

  The present invention has been made in view of the problems as described above, and the object of the present invention is to exhibit a feeling and appearance closer to natural wrinkles with a three-dimensional pattern with large irregularities, and moreover than natural wrinkles. It is another object of the present invention to provide an artificial cage having excellent durability and a method for producing the same.

  Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.

That is, the present invention relates to an artificial rod-shaped article R composed of a cylindrical body 1 made by extruding a thermoplastic resin.
.. Are irregularly formed on the surface of the cylindrical body 1, while the stripe-shaped uneven portions 11, 11... Are formed in the longitudinal direction in the die D of the extruder M. The pleated projections G, G,... Around the formed cylinder body are characterized in that they are formed by being pushed down toward the cylinder body side when being introduced into the sizing device S.

  In the present specification, the “artificial rod R” refers to an artificial product of a grass family plant such as reed or reed or a similar plant, and is a roofing material. The application is not limited only to this.

  Moreover, about the stripe-shaped uneven | corrugated | grooved part 11 * 11 ... of the said cylindrical body 1, the direction which falls when the pleated processus | protrusion G * G ... formed in the die | dye D of the extrusion molding machine M is introduce | transduced into the sizing apparatus S. A more complicated three-dimensional pattern can be formed by pushing and forming while irregularly changing. In this case, it is preferable to produce the tubular body 1 from a thermoplastic resin added with plant biomass powder.

Further, in order to form a complicated three-dimensional pattern on the surface, the large uneven ridge-like projection G ₁ formed in the die D of the extrusion molding machine M is formed on the stripe-shaped uneven portions 11, 11.・ G ₁ is pushed down when introduced into the sizing device S, and this is formed by interfering with the small pleated projections G ₂ , G ₂ , formed between the large pleated projections G ₁ , G ₁ . The method can also be adopted.

  On the other hand, when forming the stripe-shaped uneven portions 11, 11... Of the cylindrical body 1, the pleated protrusions G formed at the time of extrusion molding have a shape with a thickness on the base side smaller than the tip side. As a result, the pleated projections G, G,... Easily fall toward the cylinder main body, so that a beautiful streak-like pattern can be formed.

  In addition, for the line-shaped irregularities 11, 11... Of the cylindrical body 1, six or more pleated projections G and G formed at predetermined intervals around the cylinder main body in the die D of the extruder M. .. Are pushed down when introduced into the sizing device S, so that a more complicated three-dimensional pattern can be formed.

  Further, the cylindrical body 1 is composed of a surface layer 12 having streaky irregularities 11 and an inner layer 13 using a thermoplastic resin having higher rigidity when heated and softened than the thermoplastic resin of the surface layer 12. By doing so, a complicated three-dimensional pattern can be formed by the surface layer 12.

On the other hand, when manufacturing the artificial cage R, the cylindrical body 1 made of a thermoplastic resin is extruded from the die D of the extruder M in a heat-softened state, and the longitudinal pleats are formed around the cylindrical body. a first step of forming a Jo projections G · G ...; the tubular body 1 extruded from the die D, were introduced into the die hole H ₃ remains sizing device S of heat-softened state, in the die hole H ₃ A second step of forming irregular streak-like irregularities on the surface by pushing down or crushing the pleated projections G, G... And introduced into the die D ′ of the sizing device S It is preferable to employ a method including a third step of cooling and forming the tubular body 1.

Further, in the second step, the pleated projection G is introduced before the cylindrical body 1 is introduced into the die hole H ₃ of the sizing device S in order to randomly change the direction in which the pleated projections G, G,. -The method of spraying air irregularly on G ... can also be adopted.

For the same purpose, in the second step, prior to introducing the tube 1 in the die hole H ₃ of the sizing device S, move the tube 1 horizontally or vertically by the movable jig is rotated It is also possible to adopt a method of vibrating or vibrating.

  In the present invention, when forming the cylindrical body, pleated projections are formed around the cylindrical main body, and this is laid down at the time of introduction of the sizing device to form streak-like uneven portions, whereby the surface of the cylindrical body In addition, since it is possible to form a three-dimensional pattern with larger irregularities than in the past, the appearance of the cylindrical body can be brought closer to the atmosphere and atmosphere of an artificial basket-like product that has been dried and contracted.

  Moreover, in the present invention, because the artificial cage is made from a thermoplastic resin, durability and strength higher than natural fences can be imparted, so that the durability of thatched roofs and fences can be increased. Moreover, the use range of the straw can also be extended to floor panels and the like that cannot use natural straw in terms of strength.

  Therefore, according to the present invention, it is possible to reproduce the atmosphere of natural cocoons more faithfully, and in addition, it is superior in terms of durability, strength, maintainability (difficult to adhere dirt), etc., compared to natural cocoons. Since a bowl-like material can be provided, the practical utility value of the present invention is very high.

It is a whole perspective view showing the artificial rod-shaped object in Example 1 of this invention. It is the front view and side view showing the artificial cage in Example 1 of this invention. It is the state explanatory drawing and sectional drawing showing the shaping | molding process of the artificial rod-shaped object in Example 1 of this invention, and the shape of a metal mold | die. It is X-X 'sectional drawing showing the shape of the cylindrical body immediately after extruded outside from the extrusion molding machine in Example 1 of this invention. It is sectional drawing showing the shape of the cylindrical body at the time of shaping | molding in the modification of this invention.

“Example 1”
[Composition of artificial cage]
First, a first embodiment of the present invention will be described with reference to FIGS. In the figure, what is indicated by reference numeral 1 is a cylindrical body. In Example 1, the artificial rod-shaped object R has a surface with irregular stripe-shaped irregularities 11 in the longitudinal direction, and a cylindrical body 1 produced by extrusion molding of a thermoplastic resin. (See FIGS. 1 and 2).

  In this embodiment, the cylindrical body 1 is formed in a two-layer structure, and an ASA resin is used as the material for the outer surface layer 12 and a vinyl chloride resin is used as the material for the inner layer 13. In addition, the outer layer 2 is colored brown by adding plant biomass powder (material: wood flour) and scorching at the time of molding, thereby drying the surface of the cylindrical body 1 to give a plant texture. Is approaching.

  In addition, the streaky irregularities 11, 11... Of the cylindrical body 1 are more three-dimensional than wrinkles by devising the extrusion molding process and the sizing process (details will be described in the item of the manufacturing method below). It has become a shape. Therefore, the artificial rod-shaped object R in the present embodiment is finished with an appearance closer to that of a natural bag than before.

[Manufacturing method of artificial bowl]
Next, a method for manufacturing the artificial cage R will be described. First, as a first step, a cylindrical body 1 made of a thermoplastic resin (ASA resin and vinyl chloride resin) is extruded from a die D of an extrusion molding machine M in a heat-softened state (see FIG. 3). Also at this time, by devising the shape of the die hole H ₁ of the extruder M, longitudinal folds like projection G · G ... it is formed cylindrical body around the cylindrical body as shown in FIG. 4 is extruded To be.

In this embodiment, the die D of the extrusion molding machine M is provided with an outer die hole H _{1 serving as} the flow path of the manifest layer 12 and a die hole H _{2 serving} as the flow path of the inner layer 13, and the material is A cylindrical body in which the two layers are integrated when pushed out is formed. Further, in the above-described first step, and discolor brown plant biomass powder included in the material of the surface layer 12 by the heat of the peripheral wall of the die hole H _1.

And then, as a second step, the cylindrical body 1 extruded from the die D, were introduced into the die hole H ₃ remains sizing device S of heat-softened state, it is formed in the longitudinal direction in the die hole H ₃ The pleated projections G, G,... Around the cylinder main body are pushed down or crushed toward the cylinder main body to form irregular stripe-shaped irregularities 11, 11,.

The size of the die hole H ₃ of the sizing device S needs to be smaller than that of the die hole H ₁ of the extruder M. In the present embodiment, the shape of the die hole H ₃ of the sizing device S as described above pleated projections G · G ... collapses beautiful, and the diameter towards the outlet gradually becomes smaller tapered.

  Thereby, a three-dimensional stripe pattern can be formed on the surface of the cylindrical body 1. Further, in the second step, a more complicated three-dimensional pattern can be formed by pushing down the pleated projections G, G...

  Further, in the second step, as a simple method for irregularly changing the direction in which the pleated projections G, G,... Fall, the plant biomass powder is added to the resin material of the surface layer 12 as in this embodiment. Then, this plant biomass powder is unevenly distributed in each of the pleats G, G..., And the size of the plant biomass powder is irregular within a range of about 0.01 to 0.3 mm in particle size. Thus, a method of making the resin flow irregular can be adopted.

As another method, before the cylindrical body 1 is introduced into the die hole H ₃ of the sizing device S, air is blown against the pleated projections G, G,. Accordingly, the direction in which the pleated projections G, G,... Fall can be changed randomly.

In addition, before the cylindrical body 1 is introduced into the die hole H ₃ of the sizing device S, the cylindrical body 1 is moved left and right or up and down, rotated, or vibrated by a movable jig, It is also possible to randomly change the direction in which the pleated projections G, G. Of course, a combination of these methods can also be employed.

  Furthermore, if a thermoplastic resin (vinyl chloride resin) having a higher rigidity at the time of heat softening than the thermoplastic resin (ASA resin) of the surface layer 12 is used for the inner layer 13 as in this embodiment, the second layer described above can be used. In the step, since the inner layer 13 becomes a base and the surface layer 12 is easily deformed, the stripe-shaped uneven portion 11 becomes a more complicated three-dimensional pattern.

  Further, in this embodiment, six pleated projections G, G,... Are formed at predetermined intervals around the cylinder body so that the three-dimensional pattern formed by the stripe-shaped uneven portions 11, 11,. When the diameter of the cylindrical body 1 is increased, or when it is desired to increase the number of stripe-shaped uneven portions 11, 11,..., Six or more pleated protrusions G, G,.

Furthermore, in this embodiment, the pleated projections G, G... Are alternately formed with large pleated projections G ₁ , G ₁ ... And small pleated projections G ₂ , G ₂ . Thus, a large pleat-like projections G ₁ · G ₁ ... a by pushing, it is possible to interfere small folds like projection G ₂ · G ₂ ... between large pleat-like projections G ₁ · G ₁ ..., A complicated three-dimensional pattern can be formed.

  Further, in this embodiment, the pleated protrusions G · G formed at the time of extrusion molding have a shape with a thickness on the base side smaller than the distal end side, so that the pleated protrusions G · G when introduced into the sizing device S are used. ... tends to fall down toward the cylinder body. Therefore, a beautiful streak-like pattern can be formed on the surface of the cylindrical body 1.

  Finally, as a third step, the cylindrical body 1 introduced into the die D ′ of the sizing device S is cooled and shaped. As described above, by adopting the method including the first to third steps, it is possible to continuously and efficiently manufacture the cylindrical body 1 on which the stripe-shaped uneven portions 11, 11... Are formed. Become.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims. For example, The cylindrical body 1 does not need to have a two-layer structure, and the cylindrical body 1 can be formed only from the surface layer 12 as shown in FIG.

  As for the shape of the pleated projections G · G formed at the time of extrusion molding, as shown in FIG. 5, the thickness on the tip side and the thickness on the base side are made the same, or all the pleated projections G · G are formed. ... can be the same length (not shown). Further, the pleated projections G, G,... Can be formed around the cylinder body at unequal intervals (not shown).

  Furthermore, regarding the resin material of the surface layer 12 and the inner layer 13 of the cylindrical body 1, polyolefin resin (polypropylene, polyethylene, etc.), polystyrene resin (polystyrene, ABS resin, AES resin), acrylic resin, polyester resin An appropriate resin can be selected from a crystalline resin such as a resin (PET, polylactic acid), a polyamide-based resin (nylon), or an amorphous resin.

  On the other hand, as for the biomass powder to be mixed in the outer layer portion 2, wood powder, bamboo powder other than rice flour, rice bran powder, etc. can be used as long as the plant raw material is powdered. The mixing amount can be freely adjusted between 5 and 80 parts by weight with respect to 100 parts by weight of the resin.

  Moreover, the artificial fence-like material R can be used not only as a roofing material but also for other uses such as a flooring material, a rug, or a wall covering, and any of them can be used within the technical scope of the present invention. Belonging to.

  Recently, attention has been paid to the manufacturing of old and new products that utilize natural products made in ancient Japan and the latest technology. Among them, the wood that has long been used for buildings and daily necessities has been used by Japanese people. Familiar with Japanese culture as a material that represents wisdom and tradition.

  Under such circumstances, the artificial rice cake of the present invention and the method for producing the same are useful techniques that not only can provide an oak substitute with functionality higher than that of natural oak, but also can reproduce the natural atmosphere of natural oak. For that reason, its industrial utility value is very high.

1 Tubular body
11 Striped irregularities
12 Surface layer
13 Inner layer R Artificial bowl M Extruder S Sizing equipment D Dies H Die holes G Wrinkled protrusions

Claims (10)

In an artificial rod-shaped object composed of a cylindrical body (1) produced by extrusion molding of a thermoplastic resin,
On the surface of the cylindrical body (1), longitudinal stripe-shaped irregularities (11), (11) are irregularly formed, while the stripe-shaped irregularities (11), (11), ... are formed by an extruder. The pleated projections (G) (G)... Around the cylinder body formed in the longitudinal direction in the die (D) of (M) are formed by pushing them down to the cylinder body side when they are introduced into the sizing device (S). An artificial rod-shaped material characterized by   A sizing device in which the stripe-shaped irregularities (11), (11),... Of the cylindrical body (1) form pleated projections (G), (G), formed in the die (D) of the extrusion machine (M). The artificial scissors according to claim 1, wherein the artificial scissors are formed by being pushed down while irregularly changing the direction of falling when introduced into (S). The stripe-shaped irregularities (11), (11) of the cylindrical body (1) are large pleated projections (G ₁ ) (G ₁ ) formed in the die (D) of the extruder (M). Is pushed down when it is introduced into the sizing device (S), and this interferes with the small pleated projections (G ₂ ) (G ₂ ) formed between the large pleated projections (G ₁ ) (G ₁ ). The artificial spider-like object according to claim 1 or 2, wherein the artificial spider is formed.   The ridge-shaped projections (11), (11),... Of the cylindrical body (1) are pleated projections (thickness on the base side smaller than the tip side formed in the die (D) of the extruder (M)). The artificial rod-shaped article according to any one of claims 1 to 3, which is formed by pushing down G), (G), ... when introduced into the sizing device (S).   The artificial rod-shaped product according to any one of claims 1 to 4, wherein the cylindrical body (1) is made of a thermoplastic resin to which plant biomass powder is added.   Six or more pleats in which the stripe-shaped irregularities (11), (11),... Of the cylindrical body (1) are formed at predetermined intervals around the cylindrical body in the die (D) of the extruder (M). The artificial scissors according to any one of claims 1 to 5, wherein the protrusions (G), (G), ... are formed by being pushed down when introduced into the sizing device (S).   The cylindrical body (1) has a surface layer (12) having streaky irregularities (11) and an inner side made of a thermoplastic resin having a rigidity higher when heated and softened than the thermoplastic resin of the surface layer (12). The artificial rod-shaped object according to any one of claims 1 to 6, characterized in that it is composed of a layer (13). From the die (D) of the extrusion molding machine (M), the cylindrical body (1) made of thermoplastic resin is extruded in a heat-softened state, and the longitudinal pleated projections (G) (G) are formed around the cylindrical body. The cylindrical body (1) extruded from the die (D) is introduced into the die hole (H ₃ ) of the sizing device (S) while being heated and softened, and the die hole (H ₃ ) a second step in which the pleated projections (G) (G)... Are pushed down or crushed to form irregular stripe-shaped irregularities (11), (11) on the surface; And a third step of cooling and shaping the cylindrical body (1) introduced into the die (D ′) of the apparatus (S). In the second step, before introducing the cylindrical body (1) into the die hole (H ₃ ) of the sizing device (S), air is irregularly blown to the pleated projections (G) (G). 9. The method for manufacturing an artificial scissors according to claim 8, wherein the direction in which the pleated projections (G), (G). In the second step, before the cylindrical body (1) is introduced into the die hole (H ₃ ) of the sizing device (S), the cylindrical body (1) is moved left and right or up and down or rotated by a movable jig. The method for producing an artificial rod-shaped object according to claim 8 or 9, wherein the direction in which the pleated projections (G), (G),...