WO2013051312A1 - 網状体 - Google Patents
網状体 Download PDFInfo
- Publication number
- WO2013051312A1 WO2013051312A1 PCT/JP2012/066274 JP2012066274W WO2013051312A1 WO 2013051312 A1 WO2013051312 A1 WO 2013051312A1 JP 2012066274 W JP2012066274 W JP 2012066274W WO 2013051312 A1 WO2013051312 A1 WO 2013051312A1
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- WO
- WIPO (PCT)
- Prior art keywords
- web
- thermoplastic resin
- layer
- uniaxially oriented
- split
- Prior art date
Links
- 239000010410 layer Substances 0.000 claims abstract description 81
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 69
- 239000012790 adhesive layer Substances 0.000 claims abstract description 31
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 15
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 35
- 238000003851 corona treatment Methods 0.000 claims description 16
- 238000009941 weaving Methods 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 abstract description 28
- 238000010030 laminating Methods 0.000 abstract description 8
- 229920001577 copolymer Polymers 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000002759 woven fabric Substances 0.000 description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 12
- 238000004804 winding Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 150000002009 diols Chemical class 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- D03D15/587—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads adhesive; fusible
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
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- Y10T442/107—Comprising at least two chemically different fibers
Definitions
- the present invention relates to a net-like body obtained by laminating or weaving a uniaxially oriented body made of a thermoplastic resin so that the orientation axes intersect.
- Patent Document 1 describes that in a moisture-permeable and water-resistant sheet, a reticulate body (split fiber nonwoven fabric) is used as a reinforcing material having a reticulated structure.
- This split fiber nonwoven fabric is obtained by laminating two uniaxially oriented bodies.
- the uniaxially oriented body is formed by providing an adhesive layer made of a second thermoplastic resin having a melting point lower than that of the first thermoplastic resin on both surfaces of the main layer made of the first thermoplastic resin. It has a structure.
- the above-mentioned mesh body is used as a support body (shape holding member) of an air filter for automobiles, for example.
- an adhesive is used to bond cotton or the like to the mesh body.
- the bonding process it is required that the bonding process be performed at a relatively high temperature (for example, 200 ° C.) and in a short period from the viewpoint of manufacturing efficiency. Therefore, in order to improve the heat resistance of the mesh body, recently, a polyethylene terephthalate having a relatively high melting point (about 260 ° C.) is used instead of the polyethylene or polypropylene network having a relatively low melting point.
- a net-like body as the support has been studied.
- the uniaxially oriented body constituting the network is made into a single layer structure of polyethylene terephthalate and the uniaxially oriented bodies are heat-welded during the course of lamination, the orientation of the uniaxially oriented body is heated by the uniaxially oriented body being heated above its melting point. As a result, the axial strength (tensile strength) of the uniaxially oriented body may be reduced.
- the uniaxially oriented body made of polyethylene terephthalate does not have a single-layer structure as described above, but a layer of polyethylene terephthalate (main layer) and a resin layer (adhesive) having a heat sealing property at a temperature lower than the melting point of this layer. It is necessary to have a laminated structure of at least two layers.
- the heat-sealability means the ability to bond these by applying heat and pressure to the uniaxially oriented bodies laminated or woven.
- the present invention has been made in view of such a situation, and an object of the present invention is to provide a polyethylene terephthalate network having good orientation and relatively high heat resistance.
- the network according to the present invention is premised on the second heat having heat sealability at a temperature lower than the melting point of the first thermoplastic resin on at least one surface of the main layer made of the first thermoplastic resin.
- a uniaxially oriented body formed by applying an adhesive layer made of a plastic resin is laminated or woven through an adhesive layer so that the orientation axes intersect.
- the first thermoplastic resin is polyethylene terephthalate
- the second thermoplastic resin is an amorphous polyethylene terephthalate copolymer.
- the second thermoplastic resin constituting the uniaxially oriented adhesive layer is an amorphous polyethylene terephthalate copolymer.
- the network since the main layer of the uniaxially oriented body is made of polyethylene terephthalate, the network has a relatively high heat resistance compared to the case where the main layer is made of polyethylene or polypropylene. obtain.
- Partial enlarged view of part P in FIG. The figure which shows schematic structure of the slit web which comprises the 1st example of the mesh body in the said embodiment.
- Partial enlarged view of part Q in FIG. The figure which shows schematic structure of the uniaxially oriented tape which comprises the 2nd example of the mesh body in the said embodiment, and a 3rd example.
- the fragmentary perspective view which shows schematic structure of the woven fabric which is the 3rd example of the mesh body in the said embodiment.
- the figure which shows the manufacturing method of the split web in the said embodiment The figure which shows the 1st example of the manufacturing method of the net body in the said embodiment. Diagram showing corona treatment equipment The figure which shows the 2nd example of the manufacturing method of the net body in the said embodiment.
- FIG.1 and FIG.2 shows the uniaxially oriented body which comprises the 1st example of the mesh body in one Embodiment of this invention.
- the split web 1 shown in FIG. 1 corresponds to the uniaxially oriented body of the present invention, and a film made of a thermoplastic resin is uniaxially stretched in the longitudinal direction (axial direction of the orientation axis 1a of the split web 1), thereby It is formed by splitting in the direction and widening.
- the split web 1 uses a first thermoplastic resin and a second thermoplastic resin having a heat sealing property at a temperature lower than the melting point of the first thermoplastic resin, and a molding method such as a multilayer T-die method.
- a multilayer film consisting of at least two layers (three layers in the figure) produced by the above is stretched in the longitudinal direction (length direction), and then split using a splitter in a staggered manner in the same direction (split treatment)
- a net-like film is formed and further widened to a predetermined width.
- the split web 1 has a relatively high strength in the longitudinal direction over the entire width direction.
- reference numeral 2 corresponds to a trunk fiber
- reference numeral 3 corresponds to a branch fiber.
- FIG. 2 is a partial enlarged view of a portion P in FIG. 1, and the split web 1 has a second thermoplastic resin layer 5 provided on both sides of a first thermoplastic resin layer (main layer) 4. It has a formed three-layer structure.
- the second thermoplastic resin layer 5 functions as an adhesive layer between the webs when they are laminated together with a slit web 6 (described later) when forming a nonwoven fabric 8 (first example of a net-like body) described later.
- the first thermoplastic resin is polyethylene terephthalate (hereinafter referred to as “PET”) having a melting point of about 260 ° C.
- the second thermoplastic resin is an amorphous polyethylene terephthalate copolymer (hereinafter referred to as “amorphous PET copolymer”) having heat sealability at a temperature lower than the melting point of the first thermoplastic resin. is there.
- the amorphous PET copolymer is produced by substituting a part of ethylene glycol with a comonomer for the diol component of PET.
- comonomer of this diol component include 1,4-cyclohexanedimethanol (CHDM), neopentyl glycol (NPG), 1,4-butanediol (BDO), and 1,3-propanediol (PDO).
- CHDM 1,4-cyclohexanedimethanol
- NPG neopentyl glycol
- BDO 1,4-butanediol
- PDO 1,3-propanediol
- PET-G amorphous PET copolymers containing CHDM as a comonomer are generally called PET-G.
- the amorphous PET copolymer can be produced by substituting a part of terephthalic acid with a comonomer for the dicarboxylic acid component of PET.
- a comonomer for the dicarboxylic acid component of PET examples include IPA.
- Amorphous PET copolymer has heat sealability at a temperature lower than the melting point of PET because crystallization is suppressed by the comonomer.
- the crystallization is suppressed as the comonomer ratio is increased, so that the function as an adhesive layer between the webs can be improved.
- the present inventors have found that the above-mentioned splitting (split treatment) cannot be performed satisfactorily if the comonomer ratio in the amorphous PET copolymer is too high. That is, for the amorphous PET copolymer, the present inventors have found that it is necessary to set the comonomer ratio in consideration of the adhesion of the layer 5 and the workability of splitting (split processing). It was.
- the present inventors preferably set the ratio (molar ratio) of the comonomer and ethylene glycol to 9:91 to 50:50, more preferably 15:85 with respect to the diol component of the amorphous PET copolymer.
- the comonomer ratio (molar ratio) in the diol component is preferably 9 mol% to 50 mol%, more preferably 15 mol% to 30 mol%). It was found that good adhesion of the layer 5 and good workability of splitting (split processing) can be ensured.
- the ratio (molar ratio) between the comonomer and ethylene glycol is set based on the above findings.
- the slit web 6 shown in FIG. 3 corresponds to the uniaxially oriented body of the present invention, and a large number of slits are provided in the lateral direction (axial direction of the orientation axis 6a of the slit web 6) in a thermoplastic resin film. Later, it is formed by uniaxial stretching in the transverse direction.
- the slit web 6 is formed in the lateral direction (width direction) in the portion excluding both ears of the multilayer film, for example, by forming intermittent slits such as a staggered hook in parallel with a hot blade or the like, and then in the lateral direction. It is formed by stretching.
- the slit web 6 has a relatively high strength in the lateral direction.
- FIG. 4 is a partially enlarged view of the portion Q in FIG. 3, and the slit web 6 is provided with a second thermoplastic resin layer 5 ′ on both sides of the first thermoplastic resin layer (main layer) 4 ′. It has a three-layer structure formed as described above.
- the second thermoplastic resin layer 5 ′ functions as an adhesive layer between the webs when they are laminated together with the split web 1 during the formation of a nonwoven fabric 8 (first example of a net-like body) to be described later.
- the first thermoplastic resin layer 4 ′ is made of PET, like the first thermoplastic resin 4.
- the second thermoplastic resin layer 5 ′ is an amorphous PET copolymer, like the second thermoplastic resin 5.
- FIG. 5 shows uniaxially oriented bodies constituting the second and third examples of the mesh body in the present embodiment.
- the uniaxially oriented tape 7 shown in FIG. 5 corresponds to the uniaxially oriented body of the present invention.
- the uniaxially oriented tape 7 is produced by a molding method such as a multilayer T-die method using a first thermoplastic resin and a second thermoplastic resin having a heat sealing property at a temperature lower than the melting point of the first thermoplastic resin.
- the multilayer film composed of at least two layers (three layers in the figure) is uniaxially oriented in the longitudinal or lateral direction and cut into a multilayer stretched tape.
- thermoplastic resin layer 5 provides the second thermoplastic resin layer 5 ′′ on both sides of the first thermoplastic resin layer (main layer) 4 ′′, similar to the split web 1 and slit web 6. It has a three-layer structure formed as described above.
- the second thermoplastic resin layer 5 ′′ functions as an adhesive layer between the tapes when the uniaxially oriented tape 7 is laminated during the formation of a nonwoven fabric 9 (second example of a net-like body) to be described later.
- the thermoplastic resin layer 5 ′′ functions as an adhesive layer between the tapes when the uniaxially oriented tape 7 is woven during the formation of a woven fabric 10 (third example of a mesh) to be described later.
- thermoplastic resin layer 4 ′′ is PET, as is the first thermoplastic resin 4.
- the second thermoplastic resin layer 5 ′′ is the second thermoplastic resin 5.
- an amorphous PET copolymer As well as an amorphous PET copolymer.
- FIG. 6 shows a nonwoven fabric 8 that is a first example of a mesh body in the present embodiment.
- the nonwoven fabric 8 is formed by laminating the split web 1 and the slit web 6.
- the orientation axis 1a of the split web 1 and the orientation axis 6a of the slit web 6 are laminated so as to be orthogonal to each other.
- stacked split web 1 are surface-bonding.
- FIG. 7 shows a nonwoven fabric 9 which is a second example of a mesh body in the present embodiment.
- the nonwoven fabric 9 is formed by laminating two sets of uniaxially oriented tapes 7 arranged in parallel.
- the orientation axis 7a of one set of uniaxial orientation tape 7 and the orientation axis 7a of the other set of uniaxial orientation tape 7 are laminated so as to be orthogonal to each other.
- the contact parts of the laminated uniaxially oriented tape 7 are surface-bonded.
- FIG. 8 shows a woven fabric 10 which is a third example of a mesh body in the present embodiment.
- the woven fabric 10 is formed by weaving a uniaxially oriented tape 7.
- the uniaxially oriented tapes 7 are orthogonal to each other, and therefore the alignment axes 7a are orthogonal to each other.
- the contact parts of the orthogonal uniaxially oriented tape 7 are surface-bonded.
- FIG. 9 shows an outline of a method for manufacturing the split web 1 that is a uniaxially oriented body.
- the split web 1 mainly includes (1) a multi-layer film orientation step, (2) a split step of splitting the multi-layer film parallel to the orientation axis, and (3) winding the split film. Manufactured through a winding process and the like.
- the oriented multilayer film is brought into sliding contact with a splitter (rotating blade) 16 that rotates at high speed, and the film is split (split).
- the split web 1 formed by splitting is expanded to a predetermined width, and then subjected to a heat treatment in the heat treatment section 17, and (3) is wound up to a predetermined length in the winding process, It becomes the winding body 18.
- FIG. 10 shows a method for manufacturing a nonwoven fabric in which two split webs 1 are laminated as a first example of a method for manufacturing a mesh body in the present embodiment.
- the split web 110 (longitudinal web) manufactured as shown in FIG. 9 is fed from the raw fabric feed roll 110a, traveled at a predetermined supply speed, sent to the widening step 111, and a widening machine (not shown). )), And heat treatment is performed if necessary.
- FIG. 11 shows a corona treatment apparatus used for corona treatment.
- the corona treatment device 500 includes a high-frequency power source 501, a controller 502, and an electrode 503.
- the widened vertical web (split web 110) is wound around a grounded processing roll 504 and passes near the electrode 503 at a constant speed.
- a high frequency / high voltage output from the high frequency power source 501 is applied between the electrode 503 and the treatment roll 504 to generate corona discharge.
- the energy of this discharge is applied to the longitudinal web, so that the wettability of the surface (layer 5) of the longitudinal web is improved and the adhesiveness is improved.
- another split web 210 (transverse web) is fed from the raw fabric feed roll 210 a in the same manner as the vertical web, traveled at a predetermined supply speed, sent to the widening step 211, and a widening machine (not shown). Is expanded several times, and heat treatment is performed if necessary.
- the surface (layer 5) of the widened horizontal web is subjected to corona treatment similarly to the vertical web.
- the transverse web is cut into a length equal to the width of the longitudinal web, and supplied from a direction perpendicular to the running film of the longitudinal web, and in the laminating step 112, the adhesive layer (second thermoplastic resin layer 5) is formed.
- the webs are laminated so that the orientation axes of the webs are orthogonal to each other.
- the longitudinal web and the horizontal web that have been laminated are sequentially guided between the thermal cylinder 113a whose outer peripheral surface is a mirror surface and the mirror rolls 113b and 113c to apply nip pressure.
- a vertical web and a horizontal web are mutually thermocompression bonded and integrated. Further, the contact portions between the vertical web and the horizontal web are entirely bonded to each other.
- the longitudinal web and the transverse web integrated in this manner are wound up in a winding process to form a wound body 114 of a background laminated nonwoven fabric.
- the woven fabric 10 made of the uniaxially oriented tape 7 that has been subjected to the corona treatment before weaving is transported to the thermocompression bonding step 113, and the thermal cylinder 113a and It is possible to apply a nip pressure by guiding the woven fabric 10 between the mirror rolls 113b and 113c. In this case, by applying a nip pressure to the woven fabric 10, the uniaxially oriented tape 7 constituting the woven fabric 10 is thermocompression bonded and integrated. Further, the contact portions of the orthogonal uniaxially oriented tape 7 are entirely bonded to each other.
- FIG. 12 shows a method for manufacturing the nonwoven fabric 8 in which the split web 1 and the slit web 6 are laminated as a second example of the method for manufacturing a mesh body in the present embodiment.
- the manufacturing method of the nonwoven fabric 8 mainly includes (1) a slit process in which slitting is performed at right angles to the longitudinal direction of the multilayer film, (2) an orientation process of the multilayer slit film, and (3) a transverse web (slit web 6 ) Includes the step of laminating the longitudinal web (split web 1) and thermocompression bonding.
- the multilayer film 314 having a three-layer structure made of the above-described first and second thermoplastic resins that has been prepared and wound in advance by a molding method such as a multilayer T-die method
- a horizontal slit is put in a staggered manner at a right angle to the traveling direction.
- the film subjected to the slit treatment is subjected to horizontal alignment in the horizontal alignment step 316.
- the slit web 6 (lateral web) obtained in this way is subjected to the above-mentioned corona treatment on the surface (layer 5 ′), and (3) is conveyed to the thermocompression bonding step 317.
- the split web 410 (longitudinal web) is fed from the raw fabric feed roll 410a in the same manner as the longitudinal web of FIG. 10, is run at a predetermined supply speed, and is sent to the widening step 411. Widen several times and if necessary heat treatment. Thereafter, the surface of the vertical web is subjected to the corona treatment described above, and the vertical web is sent to the thermocompression bonding step 317, where the vertical web and the horizontal web are laminated so that their respective orientation axes intersect and thermocompression bonded.
- the vertical web and the horizontal web are sequentially guided between the thermal cylinder 317a whose outer peripheral surface is a mirror surface and the mirror rolls 317b and 317c, and a nip pressure is applied to the webs so that they are thermocompression bonded together.
- a nip pressure is applied to the webs so that they are thermocompression bonded together.
- the contact portions of the vertical web and the horizontal web are entirely bonded to each other.
- the longitudinal web and the transverse web integrated in this way are conveyed to the winding process and wound up to become a wound body 318 of the nonwoven fabric 8.
- a corona treatment is applied to each surface (layers 5 and 5 ') immediately before the longitudinal web and the lateral web are laminated.
- the timing of performing the corona treatment is not limited to this, and the corona treatment is performed at any timing at which the effect of improving the adhesion of the web surface by the corona treatment can be obtained before the longitudinal lamination of the vertical web and the horizontal web. It is possible.
- the above-mentioned uniaxially oriented body (split web 1, slit web 6 and uniaxially oriented tape 7) has a second thermoplastic resin (amorphous PET) on both sides of the first thermoplastic resin (PET) layer.
- the layer structure of the uniaxially oriented body is not limited to this, and the uniaxially structured body is made of the first thermoplastic resin (PET). You may have the 2 layer structure formed by providing the layer of the 2nd thermoplastic resin (amorphous PET copolymer) to one side of the layer.
- FIG. 13 corresponds to the partial enlarged view shown in FIG. 2, and shows a modification of the split web 1 shown in FIGS.
- the split web 1 ′ shown in FIG. 13 is provided with a second thermoplastic resin (amorphous PET copolymer) layer 5 on one surface of a first thermoplastic resin (PET) layer (main layer) 4. It has a two-layer structure formed as described above.
- the second thermoplastic resin layer 5 functions as an adhesive layer between webs when the nonwoven fabric 8 (first example of a net-like body) is laminated together with the slit web 6 or a slit web 6 ′ described later.
- the partial enlarged view shown in FIG. 14 corresponds to the partial enlarged view shown in FIG. 4, and shows a modification of the slit web 6 shown in FIGS. Differences between this modified example (slit web 6 ′) and the slit web 6 will be described.
- the slit web 6 ′ shown in FIG. 14 has a second thermoplastic resin (amorphous PET copolymer) layer 5 ′ on one surface of a first thermoplastic resin (PET) layer (main layer) 4 ′.
- PET thermoplastic resin
- main layer main layer
- the second thermoplastic resin layer 5 ′ functions as an adhesive layer between the webs when the nonwoven fabric 8 (first example of a net-like body) is laminated together with the split web 1 or the split web 1 ′.
- a uniaxially oriented tape 7 ′ shown in FIG. 15 is a modification of the uniaxially oriented tape 7 shown in FIG. Differences between this modified example (uniaxially oriented tape 7 ′) and uniaxially oriented tape 7 will be described.
- the uniaxially oriented tape 7 ′ shown in FIG. 15 has a second thermoplastic resin (amorphous PET copolymer) layer 5 on one surface of a first thermoplastic resin (PET) layer (main layer) 4 ′′. "Has a two-layer structure formed.
- the second thermoplastic resin layer 5 ′′ functions as an adhesive layer between the tapes when the uniaxially oriented tape 7 ′ is laminated during the formation of the nonwoven fabric 9 (second example of a net-like body).
- the thermoplastic resin layer 5 ′′ functions as an adhesive layer between the tapes when the uniaxially oriented tape 7 ′ is woven during the formation of the woven fabric 10 (third example of a net-like body).
- the second thermoplastic resins 5, 5 constituting the adhesive layer of the uniaxially oriented body is split webs 1, 1 ′, slit webs 6, 6 ′, and uniaxially oriented tapes 7, 7 ′).
- ', 5 is the amorphous PET copolymer. This allows the adhesive layers of the uniaxially oriented body to be bonded to each other below the melting point of the main layer (PET), so that the orientation of the uniaxially oriented body is improved.
- a net-like body nonwoven fabrics 8, 9 and woven fabric 10) can be formed while keeping good.
- the main layer of the uniaxially oriented body is made of PET.
- the net-like body nonwoven fabrics 8, 9 and woven fabric 10.
- the uniaxially oriented body (split web 1, slit web 6, and uniaxially oriented tape 7) provides an adhesive layer (amorphous PET copolymer) on both sides of the main layer (PET). It has a three-layer structure formed as described above. Accordingly, one adhesive layer of the uniaxially oriented body can be used as an adhesive portion for the background lamination or weaving of the uniaxially oriented body, and the other adhesive layer can be used as another member (for example, the above-described cotton or the like). Since it can be set as an adhesion part, integration of uniaxially oriented bodies and adhesion with other members can be performed without using an adhesive or the like.
- the surface of the uniaxially oriented body (adhesive layer made of an amorphous PET copolymer) is subjected to corona treatment.
- the wettability of the adhesive layer is improved and the adhesiveness is improved, so that the net-like body can ensure sufficient strength (particularly peel strength).
- the amorphous PET copolymer has a ratio (molar ratio) of comonomer to ethylene glycol of 9:91 to 50:50, more preferably 15 with respect to its diol component. : 85 to 30: 70.
- the comonomer ratio (molar ratio) in the diol component of the amorphous PET copolymer is preferably 9 mol% to 50 mol%, more preferably 15 mol% to 30 mol%.
- a polyethylene terephthalate network can have good orientation and relatively high heat resistance, so that the industrial applicability is great.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
Abstract
Description
本発明は、このような実状に鑑み、良好な配向性を有すると共に、比較的高い耐熱性を有するポリエチレンテレフタレート製の網状体を提供することを目的とする。
図1及び図2は、本発明の一実施形態における網状体の第1例を構成する一軸配向体を示す。
また、第2の熱可塑性樹脂は、第1の熱可塑性樹脂の融点より低温でヒートシール性を有する非晶性ポリエチレンテレフタレート共重合体(以下、「非晶性PET共重合体」と称する)である。
非晶性PET共重合体については、そのコモノマーの割合を高くするほど結晶化が抑制されるので、ウェブ相互の接着層としての機能を向上させることができる。
すなわち、非晶性PET共重合体については、層5の接着性と割繊(スプリット処理)の作業性とを考慮して、コモノマーの割合を設定する必要があることを本発明者らは見出した。
図3に示すスリットウェブ6は、本発明の一軸配向体に対応するものであり、熱可塑性樹脂製のフィルムに横方向(スリットウェブ6の配向軸6aの軸方向)に多数のスリットを入れた後に横方向に一軸延伸させて形成される。詳しくは、スリットウェブ6は、上記多層フィルムの両耳部を除く部分に、横方向(幅方向)に、例えば熱刃などにより平行に千鳥掛け等の断続したスリットを形成した後、横方向に延伸させて形成される。また、スリットウェブ6は、横方向に比較的高い強度を有する。
図5に示す一軸配向テープ7は、本発明の一軸配向体に対応するものである。一軸配向テープ7は、第1の熱可塑性樹脂と、第1の熱可塑性樹脂の融点より低温でヒートシール性を有する第2の熱可塑性樹脂とを用い、多層Tダイ法等の成形法により作製された少なくとも2層(図では3層)からなる多層フィルムを、縦又は横方向に一軸配向させ、裁断して多層の延伸テープとしたものである。図5に示す一軸配向テープ7は、スプリットウェブ1及びスリットウェブ6と同様に、第1の熱可塑性樹脂の層(主層)4”の両面に第2の熱可塑性樹脂の層5”を付与して形成された3層構造を有する。第2の熱可塑性樹脂の層5”は、後述する不織布9(網状体の第2例)の形成時に一軸配向テープ7を経緯積層する際のテープ相互の接着層として機能する。また、第2の熱可塑性樹脂の層5”は、後述する織布10(網状体の第3例)の形成時に一軸配向テープ7を織成する際のテープ相互の接着層として機能する。なお、図中の符号7aは一軸配向テープ7の配向軸に対応する。ここで、第1の熱可塑性樹脂の層4”は、第1の熱可塑性樹脂4と同じく、PETである。また、第2の熱可塑性樹脂の層5”は、第2の熱可塑性樹脂5と同じく、非晶性PET共重合体である。
図6は、本実施形態における網状体の第1例である不織布8を示す。不織布8は、スプリットウェブ1とスリットウェブ6とを経緯積層して形成される。不織布8では、スプリットウェブ1の配向軸1aとスリットウェブ6の配向軸6aとが互いに直交するように経緯積層されている。また、不織布8では、積層されたスプリットウェブ1の接触部位同士が面接着している。
図9は、一軸配向体であるスプリットウェブ1の製造方法の概略を示す。
図9に示すように、スプリットウェブ1は、主として、(1)多層フィルムの配向工程、(2)配向多層フィルムを配向軸と平行にスプリットするスプリット工程、及び、(3)スプリットしたフィルムを巻き取る巻取工程等を経て製造される。
図10は、本実施形態における網状体の製造方法の第1例として、スプリットウェブ1を2枚積層した不織布の製造方法を示す。
図11は、コロナ処理に用いられるコロナ処理装置を示す。
そして、横ウェブを縦ウェブの幅に等しい長さに切断し、縦ウェブの走行フィルムに対し直角の方向から供給して、積層工程112において接着層(第2の熱可塑性樹脂の層5)を介して各ウェブの配向軸が互いに直交するように経緯積層させる。経緯積層した縦ウェブ及び横ウェブを、熱圧着工程113において、外周面が鏡面である熱シリンダ113aと鏡面ロール113b,113cとの間に順次導いてニップ圧を加える。これにより、縦ウェブと横ウェブとが互いに熱圧着されて一体化される。また、縦ウェブと横ウェブとの接触部位同士が全面的に面接着する。このようにして一体化された縦ウェブ及び横ウェブは巻取工程にて巻き取られて、経緯積層不織布の巻取体114になる。
不織布8の製造方法は、主として、(1)多層フィルムの長手方向に対して直角にスリット処理を行うスリット工程、(2)多層スリットフィルムの配向工程、及び、(3)横ウェブ(スリットウェブ6)に縦ウェブ(スプリットウェブ1)を積層させて熱圧着する圧着工程を含む。
図13に示す部分拡大図は、図2に示した部分拡大図に対応するものであり、図1及び図2に示したスプリットウェブ1の変形例を示す。
図13に示すスプリットウェブ1’は第1の熱可塑性樹脂(PET)の層(主層)4の一方の面に第2の熱可塑性樹脂(非晶性PET共重合体)の層5を付与して形成された2層構造を有する。第2の熱可塑性樹脂の層5は、不織布8(網状体の第1例)の形成時にスリットウェブ6又は後述するスリットウェブ6’と共に経緯積層される際のウェブ相互の接着層として機能する。
この変形例(スリットウェブ6’)とスリットウェブ6との相違点について説明する。
この変形例(一軸配向テープ7’)と一軸配向テープ7との相違点について説明する。
図15に示す一軸配向テープ7’は第1の熱可塑性樹脂(PET)の層(主層)4”の一方の面に第2の熱可塑性樹脂(非晶性PET共重合体)の層5”を付与して形成された2層構造を有する。第2の熱可塑性樹脂の層5”は、不織布9(網状体の第2例)の形成時に一軸配向テープ7’を経緯積層する際のテープ相互の接着層として機能する。また、第2の熱可塑性樹脂の層5”は、織布10(網状体の第3例)の形成時に一軸配向テープ7’を織成する際のテープ相互の接着層として機能する。
1a 配向軸
2 幹繊維
3 枝繊維
4,4’,4” 第1の熱可塑性樹脂の層
5,5’,5” 第2の熱可塑性樹脂の層
6,6’ スリットウェブ
6a 配向軸
7,7’ 一軸配向テープ
7a 配向軸
8 不織布
9 不織布
10 織布
14 多層フィルム
15 オーブン
16 スプリッター
17 熱処理部
18 巻取体
110 スプリットウェブ(縦ウェブ)
110a 原反繰出しロール
111 拡幅工程
112 積層工程
113 熱圧着工程
113a 熱シリンダ
113b,113c 鏡面ロール
114 巻取体
210 スプリットウェブ(横ウェブ)
210a 原反繰出しロール
211 拡幅工程
314 多層フィルム
315 横スリット工程
316 横配向工程
317 熱圧着工程
317a 熱シリンダ
317b,317c 鏡面ロール
318 巻取体
410 スプリットウェブ(縦ウェブ)
410a 原反繰出しロール
411 拡幅工程
500 コロナ処理装置
501 高周波電源
502 コントローラ
503 電極
504 処理ロール
Claims (3)
- 第1の熱可塑性樹脂からなる主層の少なくとも一方の面に、前記第1の熱可塑性樹脂の融点よりも低温でヒートシール性を有する第2の熱可塑性樹脂からなる接着層を付与して形成した一軸配向体を、配向軸が交差するように前記接着層を介して経緯積層し又は織成してなる網状体であって、
前記第1の熱可塑性樹脂はポリエチレンテレフタレートであり、
前記第2の熱可塑性樹脂は非晶性ポリエチレンテレフタレート共重合体であることを特徴とする網状体。 - 前記一軸配向体は、前記主層の両面に前記接着層を付与して形成されたことを特徴とする請求項1記載の網状体。
- 前記経緯積層又は織成に先立って、前記接着層にコロナ処理を施したことを特徴とする請求項1記載の網状体。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/349,858 US20150004860A1 (en) | 2011-10-06 | 2012-06-26 | Mesh body |
EA201490742A EA201490742A1 (ru) | 2011-10-06 | 2012-06-26 | Сетчатый элемент |
CN201280049306.5A CN103857525B (zh) | 2011-10-06 | 2012-06-26 | 网状体 |
MX2014004106A MX2014004106A (es) | 2011-10-06 | 2012-06-26 | Cuerpo de malla. |
EP12838738.8A EP2762310A4 (en) | 2011-10-06 | 2012-06-26 | BODY OF MAILLAGE |
IL231940A IL231940A0 (en) | 2011-10-06 | 2014-04-03 | reticular body |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011221990A JP5946622B2 (ja) | 2011-10-06 | 2011-10-06 | 網状体の製造方法 |
JP2011-221990 | 2011-10-06 |
Publications (1)
Publication Number | Publication Date |
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WO2013051312A1 true WO2013051312A1 (ja) | 2013-04-11 |
Family
ID=48043484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/066274 WO2013051312A1 (ja) | 2011-10-06 | 2012-06-26 | 網状体 |
Country Status (8)
Country | Link |
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US (1) | US20150004860A1 (ja) |
EP (1) | EP2762310A4 (ja) |
JP (1) | JP5946622B2 (ja) |
CN (1) | CN103857525B (ja) |
EA (1) | EA201490742A1 (ja) |
IL (1) | IL231940A0 (ja) |
MX (1) | MX2014004106A (ja) |
WO (1) | WO2013051312A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20130007947A1 (en) * | 2011-07-08 | 2013-01-10 | Hurley International, Llc | Water Shorts |
JP6138094B2 (ja) * | 2014-09-19 | 2017-05-31 | Jxtgエネルギー株式会社 | 網状不織布 |
JP6845005B2 (ja) | 2016-12-27 | 2021-03-17 | Eneos株式会社 | 粘着テープ |
USD926652S1 (en) * | 2017-08-31 | 2021-08-03 | Jaguar Land Rover Limited | Vehicle component pattern |
PL3769954T3 (pl) | 2019-07-22 | 2023-10-23 | Carl Freudenberg Kg | Laminat włókninowy |
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JPS61199949A (ja) * | 1985-03-02 | 1986-09-04 | 萩原工業株式会社 | 合成樹脂積層シ−トおよびその製造方法 |
JPH08267636A (ja) * | 1995-03-10 | 1996-10-15 | Nippon Petrochem Co Ltd | 耐熱性強化積層体 |
JPH09275821A (ja) * | 1996-04-17 | 1997-10-28 | Chisso Corp | ネット状の農業用資材 |
JP2002210884A (ja) | 2001-01-23 | 2002-07-31 | Nippon Petrochem Co Ltd | 透湿耐水性シートおよびその製造方法 |
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EP0035835B1 (en) * | 1980-03-12 | 1984-03-14 | Imperial Chemical Industries Plc | Polyester film composites |
GB9002374D0 (en) * | 1990-02-02 | 1990-04-04 | Don & Low Holdings Ltd | Improvements in or relating to composite sheet material |
US5307796A (en) * | 1990-12-20 | 1994-05-03 | Minnesota Mining And Manufacturing Company | Methods of forming fibrous filtration face masks |
JPH06322085A (ja) * | 1993-05-17 | 1994-11-22 | Mitsubishi Kasei Corp | シーラント用共重合ポリエステル |
JP3119108B2 (ja) * | 1995-03-31 | 2000-12-18 | 凸版印刷株式会社 | 印刷層を設けたバリア性の優れた包装材料 |
JPH10278154A (ja) * | 1997-04-01 | 1998-10-20 | Nippon Petrochem Co Ltd | 多孔質シートと目の粗い補強材との積層方法 |
GB9902299D0 (en) * | 1999-02-02 | 1999-03-24 | Du Pont | Polymeric film |
DE102008046780A1 (de) * | 2008-09-11 | 2010-03-18 | Mitsubishi Polyester Film Gmbh | Siegelfähige Polyesterfolie |
-
2011
- 2011-10-06 JP JP2011221990A patent/JP5946622B2/ja not_active Expired - Fee Related
-
2012
- 2012-06-26 MX MX2014004106A patent/MX2014004106A/es unknown
- 2012-06-26 EA EA201490742A patent/EA201490742A1/ru unknown
- 2012-06-26 CN CN201280049306.5A patent/CN103857525B/zh not_active Expired - Fee Related
- 2012-06-26 US US14/349,858 patent/US20150004860A1/en not_active Abandoned
- 2012-06-26 WO PCT/JP2012/066274 patent/WO2013051312A1/ja active Application Filing
- 2012-06-26 EP EP12838738.8A patent/EP2762310A4/en not_active Withdrawn
-
2014
- 2014-04-03 IL IL231940A patent/IL231940A0/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61199949A (ja) * | 1985-03-02 | 1986-09-04 | 萩原工業株式会社 | 合成樹脂積層シ−トおよびその製造方法 |
JPH08267636A (ja) * | 1995-03-10 | 1996-10-15 | Nippon Petrochem Co Ltd | 耐熱性強化積層体 |
JPH09275821A (ja) * | 1996-04-17 | 1997-10-28 | Chisso Corp | ネット状の農業用資材 |
JP2002210884A (ja) | 2001-01-23 | 2002-07-31 | Nippon Petrochem Co Ltd | 透湿耐水性シートおよびその製造方法 |
Non-Patent Citations (1)
Title |
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See also references of EP2762310A4 |
Also Published As
Publication number | Publication date |
---|---|
MX2014004106A (es) | 2014-05-21 |
EA201490742A1 (ru) | 2014-07-30 |
IL231940A0 (en) | 2014-08-31 |
EP2762310A1 (en) | 2014-08-06 |
US20150004860A1 (en) | 2015-01-01 |
JP5946622B2 (ja) | 2016-07-06 |
CN103857525B (zh) | 2016-08-24 |
EP2762310A4 (en) | 2015-06-24 |
JP2013082084A (ja) | 2013-05-09 |
CN103857525A (zh) | 2014-06-11 |
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