JP2018089083A - Reed screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reed screen which is light and excellent in sanitation, permeability, natural illumination, screening property, heat insulation and so on.SOLUTION: A reed screen having a plurality of horizontal bones coordinated by warp yarns is characterized in that the plurality of horizontal bones is thermoplastic resin having a void ratio of 15 to 50%.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an insulator that is lightweight and excellent in heat insulation.

  The blinds that are hung on the windows and entrances of the house to avoid the sun, blindfold, or stand upright are lightweight, breathable, and well-lighted, and are widely used at home because they are easy to store and inexpensive. Has been.

  A bamboo blind is generally composed of an upper beam, a lower beam, a horizontal frame, and warp threads that connect the upper frame and the lower beam to the horizontal frame. The horizontal frame includes finely divided bamboo, firewood, finely cut wood, and synthetic resin tubules. Synthetic resin rods, metal tubes, metal rods, etc. are used (see, for example, Patent Documents 1 and 2).

  However, horizontal bones made of bamboo, firewood, and wood are easy to rot and lack hygiene and weather resistance, and horizontal bones made of synthetic resin and metal lack lightness and heat insulation. Therefore, there has been a demand for a blind that is excellent in hygiene, weather resistance, air permeability, daylighting, shielding, heat insulation, and the like.

JP 2003-93223 A JP 2004-89316 A

  In view of the above problems, an object of the present invention is to provide a lightweight and excellent blind such as sanitary property, weather resistance, air permeability, daylighting property, shielding property, and heat insulating property.

That is, the present invention
[1] A blind in which a plurality of transverse bones are linked by warp threads, wherein the transverse bone is a thermoplastic resin rod having a porosity of 15 to 50%.
[2] The shaft according to the above [1], wherein the transverse bone has a diameter of 0.5 to 5 mm, and
[3] The thermoplastic resin rod-shaped body is made of a polyolefin resin and an inorganic filler, and the uniaxially stretched tape-shaped body is bound in a string shape, and the tape-shaped bodies are irregularly and partially fused with each other. It is a string-like body in which a fusion-bonding film is formed on the surface, and relates to the blind described in [1] or [2] above.

  The structure of the blind of the present invention is as described above, and is lightweight and excellent in hygiene, weather resistance, air permeability, daylighting, shielding, heat insulation, and the like.

It is a front view which shows an example of the blind of this invention.

  The present invention is a blind in which a plurality of horizontal bones are linked by warp, and the horizontal bone is a thermoplastic resin rod having a porosity of 15 to 50%.

  When the porosity of the thermoplastic resin rod-shaped body constituting the horizontal bone is lowered, it becomes heavier and harder, and heat insulation, impact resistance, shielding properties, etc. are reduced. Therefore, it is 15 to 50%.

  The porosity is a volume ratio in the rod-shaped body of bubbles having gas such as air, nitrogen gas, carbon dioxide gas, etc. existing in the rod-shaped body. The bubble may be not only a closed cell but also an open cell, and the open cell may communicate with the outside of the rod-shaped body. However, the hollow rod-shaped body is not included in the rod-shaped body of the present invention.

  Since the thickness of the transverse bone is a transverse bone, the diameter is preferably 0.5 to 5 mm, more preferably 0.8 to 3 mm. In addition, the horizontal bone may be used as a horizontal bone by binding a plurality of thermoplastic resin rods.

  Examples of the thermoplastic resin include conventionally known arbitrary thermoplastic resins such as polyvinyl chloride resins such as polyvinyl chloride resin, chlorinated vinyl chloride resin, and polyvinylidene chloride resin; polyethylene resin, polypropylene resin, Polyolefin resins such as polybutylene resins and ethylene-propylene copolymers; polystyrene resins, polyamide resins, polycarbonate resins, polyphenylene sulfide resins, polysulfone resins, ABS resins, polyester resins and the like.

  As the thermoplastic resin rod-like body, a closed cell polyolefin-based resin foam that is lightweight and easy to manufacture is preferable.

  Examples of the polyolefin resin include high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-1-butene copolymer. Examples thereof include a polymer, an ethylene-1-pentene copolymer, and an ethylene-1-hexene copolymer, and a high-density polyethylene resin and a polypropylene resin are preferable.

  The closed-cell foam is a foam having bubbles that do not communicate with the outside of the rod-shaped body. If the closed-cell ratio is reduced, the heat insulation, mechanical strength, etc. are reduced, preferably 30% or more, more preferably. Is 50% or more. The closed cell ratio can be easily measured, for example, by immersing the foam in water and measuring the increased volume of water.

  Further, as a different preferable thermoplastic resin rod-like body, a uniaxially stretched tape-like body made of a polyolefin resin and an inorganic filler is bound in a string shape, and the tape-like bodies are irregularly and partially fused with each other. And a string-like body having a fusion coating formed on the surface.

  The method for producing the rod-shaped body is not particularly limited. For example, the resin film made of a polyolefin-based resin and an inorganic filler is uniaxially stretched, and the obtained uniaxially stretched tape-shaped body is bound into a string shape, and the resulting binding is obtained. By passing the body through the gap of the heating member having a gap narrower than the diameter of the bundle, the tape-like bodies are irregularly and partially fused and converged, and a fusion coating is formed on the surface to form a string. A production method for obtaining a shaped body is preferred.

  Examples of the polyolefin resin include high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-1-butene copolymer. Examples thereof include a copolymer, an ethylene-1-pentene copolymer, and an ethylene-1-hexene copolymer.

  Examples of the inorganic filler include calcium carbonate, magnesium carbonate, aluminum oxide, magnesium oxide, titanium oxide, magnesium hydroxide, talc, mica, and clay.

  When an inorganic filler is contained in the resin film, when the resin film is uniaxially stretched, voids are formed in the tape-like body with the contained inorganic filler as the core, making it lightweight, heat insulation, cushioning Therefore, it is preferable to add 10 to 50 parts by weight with respect to 100 parts by weight of the polyolefin resin.

  As the method for producing the resin film, any conventionally known production method can be employed. For example, an extrusion method, a T-die method, a casting method, a calendar method, a resin composition comprising an olefin resin, an inorganic filler, and the like. Examples of the film forming method include an inflation method and a press method.

  The uniaxially stretched tape-shaped body is obtained by uniaxially stretching the resin film, and the uniaxial stretching method may be any conventionally known method, such as a roll uniaxial stretching method, a zone uniaxial stretching method, or the like. Can be mentioned.

  When the uniaxial stretching temperature is lowered, it cannot be uniformly stretched, and when it is raised, the resin film is melt-cut. Therefore, the range of the melting point of the polyolefin resin of the resin film to be stretched is preferably in the range of “melting point−60 ° C.”, more preferably polyolefin. It is “melting point−50 ° C.” to “melting point−5 ° C.” of the base resin.

  The uniaxial stretching ratio is preferably 2 to 10 times because the mechanical strength decreases as the ratio decreases and the uniaxial stretching ratio becomes harder as the ratio increases and the texture of the interdigital transducer decreases. The thickness of the tape-like body is preferably 5 to 20 μm.

  The bundle is formed by binding a tape-like body in a string shape. The bundling method is not particularly limited, for example, a method in which a tape-like body is folded and converged along a uniaxial stretching direction, a method in which a narrow tape-like body is twisted into a twisted yarn, and a narrow tape-like body in a braid shape. A method of folding and converging is preferable.

  Next, the tape-like bodies are irregularly fused and converged and a fusion coating is formed on the surface by passing the above-mentioned bundle through the gap of the heating member having a gap narrower than the diameter of the bundle. By doing so, a string-like body is obtained.

  The heating member can be heated as long as it has a narrow gap that is narrower than the diameter of the bundle and allows the bundle to pass through, but by passing the bundle through the narrow gap, Since the tape-like bodies are fused and converged irregularly to each other and a fusion coating is formed on the surface, the diameter of the gap is preferably 40 to 90% of the diameter of the bundle. Further, the cross-sectional shape of the void portion may be substantially the same as the cross-sectional shape of the string-like body (lateral bone) to be obtained, and for example, a circular shape, an elliptical shape, a quadrangular shape, a hexagonal shape, an octagonal shape and the like are preferable.

  Further, protrusions may be formed in the vicinity of the exit of the gap so that wrinkles and through holes are formed in the formed fusion coating. When the through-hole is formed in the formed fusion coating, it is preferable because the voids in the fusion coating are communicated with the outside air and the heat insulation is further improved.

  The heating temperature of the heating member causes the tape-like bodies to be fused and converged irregularly and form a fusion coating on the surface by passing the bundle through the gap of the heating member. The melting point is equal to or higher than the melting point of the polyolefin resin of the body, and is preferably "melting point + 100 ° C" to "melting point + 150 ° C" of the polyolefin resin.

  When the speed at which the bundle is passed through the gap of the heating member becomes slow, the fusion rate of the tape-like body increases, the porosity decreases, and becomes heavier and harder. Since it becomes difficult to form a film, although it depends on the heating temperature, generally 15 to 75 m / min is preferable.

  The string-like body manufactured by the above method has a high porosity, light weight, heat insulation, because a uniaxially stretched tape-like body is partially fused and a fusion coating is formed on the surface. Excellent in properties, cushioning, impact resistance, mechanical strength, hygiene and weather resistance.

  In addition, a pigment may be added to the thermoplastic resin in order to color the transverse bone. Examples of the pigment include organic pigments such as azo, phthalocyanine, selenium, and dye lake, and inorganic pigments such as oxide, molybdenum chromate, sulfide / selenide, ferrocyanide, and the like. Can be mentioned. Although the addition amount of a pigment should just be determined suitably as needed, generally 0.1-10 weight part is preferable with respect to 100 weight part of olefin resin, More preferably, it is 1-5 weight part.

  Furthermore, if necessary, antioxidants such as phenolic antioxidants, aromatic amine antioxidants, UV absorbers such as salicylic acid esters, benzophenones, benzotriazoles, cyanoacrylates, hindered amines Stabilizers, cationic and nonionic antistatic agents, impact modifiers, antifogging agents, flame retardants, and the like may be added. Further, the surface of the thermoplastic resin rod-shaped body may be coated with a flame retardant, a water repellent, an antifungal agent or the like, if necessary.

  Next, the blind of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of the blind of the present invention. In the figure, 1 is an upper beam, 2 is a lower beam, and 3, 3,. The transverse bone 3 is connected by warp threads 4, 4... Connected to the upper beam 1 and the lower beam 2. Reference numeral 5 denotes a hanging thread connected to the upper rail 1.

  The warp yarn may be any warp yarn conventionally used in the production of tatami mats, and examples thereof include hemp yarn, cotton yarn, polyester yarn, mixed yarn of cotton and polyester, etc. It may be colored brown or the like.

  Moreover, the color of the said horizontal bone may be 1 type, and the horizontal bone of 2 or more types of different colors may be used together. One type of warp color may be used, or two or more different types of warp yarns may be used in combination. By doing so, the design of the blind is improved.

  Next, examples of the present invention will be described, but the present invention is not limited to the examples.

Example 1
Polypropylene resin (manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC PP series”, MFR 5.0 g / 10 min, density 0.9 g / cm ³ , melting point 155 to 165 ° C.) 100 parts by weight, calcium carbonate (manufactured by Takehara Chemical Industries, A resin composition comprising 27 parts by weight of a trade name “MAX series” and 2.0 parts by weight of an azo inorganic pigment (trade name “PPM54700” manufactured by Toyo Ink Co., Ltd.) was supplied to a uniaxial kneading extruder with a screw of 70 mm. The kneaded extrusion was performed at 210 ° C. to obtain a polypropylene resin film having a thickness of 100 μm.

  The obtained polypropylene resin film was supplied to a hot plate type uniaxial stretching apparatus set at 120 ° C. and stretched 5 times to obtain a uniaxially stretched tape-like body having a thickness of 20 μm. The obtained tape-like body was folded in the uniaxial stretching direction, and then passed through a through-hole having a diameter of 2.0 mm to obtain a string-like bundle. The obtained bundle was supplied to a heating member having a gap having a circular cross section with a diameter of 1.0 mm, and the gap was passed at a speed of 65 m / min to obtain a string (thermoplastic resin rod).

  The heating member was heated to 320 ° C., and eight sharp protrusions with a height of 0.1 mm were erected at intervals of 45 degrees near the exit of the gap. The resulting string-like body (thermoplastic resin rod-like body) has a tape-like body partially fused and a fusion coating formed on the surface, and through-holes and irregularities are randomly formed on the fusion coating. It had been. The obtained string-like body (thermoplastic resin rod-like body) was green, its diameter was about 1.1 mm, and the porosity was 33%.

  A plurality of the obtained string-like bodies (thermoplastic resin rod-like bodies) were arranged in the longitudinal direction as transverse bones, and woven with warp yarns of red ester yarn having a diameter of 0.5 mm to obtain a comb as shown in FIG. In addition, the upper crosspiece 1 and the lower crosspiece 2 are polypropylene resin plates, and the hanging thread 5 is a string made of polypropylene resin.

  The blinds do not corrode even when exposed to wind and rain, are hygienic, and have excellent weather resistance. Further, since the horizontal bone is lightweight and has excellent heat insulation properties, it can be suitably used as a blind.

  The blinds of the present invention are lightweight, hygienic, weatherproof, light-shielding, breathable, daylighting, light-shielding, heat insulation, etc., so they can be used to avoid sunlight and blindfolded windows and entrances. In addition to being hung on or standing, it can be suitably used as an interior decoration member and can be widely used in the construction field.

1 Upper beam 2 Lower beam 3 Horizontal bone 4 Warp thread 5 Hanging thread

Claims (3)

  A blind in which a plurality of transverse bones are linked by warps, and the transverse bone is a thermoplastic resin rod having a porosity of 15 to 50%.   The shaft according to claim 1, wherein the transverse bone has a diameter of 0.5 to 5 mm.   A thermoplastic resin rod-like body is made of a polyolefin resin and an inorganic filler, and a uniaxially stretched tape-like body is bound in a string shape, and the tape-like bodies are irregularly and partially fused with each other and fused to the surface. 3. The blind according to claim 1 or 2, which is a string-like body on which a coating film is formed.

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