WO2004079083A1 - Bache olefinique et procede pour la produire - Google Patents

Bache olefinique et procede pour la produire Download PDF

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Publication number
WO2004079083A1
WO2004079083A1 PCT/KR2003/000412 KR0300412W WO2004079083A1 WO 2004079083 A1 WO2004079083 A1 WO 2004079083A1 KR 0300412 W KR0300412 W KR 0300412W WO 2004079083 A1 WO2004079083 A1 WO 2004079083A1
Authority
WO
WIPO (PCT)
Prior art keywords
ethylene
copolymer
olefinic
tarpaulin
woven cloth
Prior art date
Application number
PCT/KR2003/000412
Other languages
English (en)
Inventor
Young-Sang Ki
Original Assignee
Young-Sang Ki
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Young-Sang Ki filed Critical Young-Sang Ki
Priority to AU2003214661A priority Critical patent/AU2003214661A1/en
Priority to PCT/KR2003/000412 priority patent/WO2004079083A1/fr
Publication of WO2004079083A1 publication Critical patent/WO2004079083A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B2037/148—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers whereby layers material is selected in order to facilitate recycling of the laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter

Definitions

  • the present invention relates to an olefinic tarpaulin and a method for preparing the same, and more particularly to an olefinic tarpaulin which shows high flexibility and toughness, reduces its weight, does not generate environmentally-harmful gases in incineration, is recyclable and maintains certain mechanical strength, by melting and mixing an olefinic tarpaulin, an olefinic copolymer comprising randomly-coupled ethylene and propylene or vinylacetate, and styrene-ethylene-butane block copolymer in a single screw extruder, and coating the resulting high flexibility and toughness composition on one or both surfaces of polypropylene woven cloth (multi-filaments, staple fibers, non-woven fabrics, split yarns, etc.) or polyethylene woven cloth (split yarns), and a method for preparing the same.
  • polypropylene woven cloth multi-filaments, staple fibers, non-woven fabrics, split yarns, etc.
  • olefinic tarpaulins used for a waterproof tent, a protective cover, an original cloth for a temporary tent and an intercepting film for building are classified into PE tarpaulins and PVC tarpaulins according to used materials.
  • the PE tarpaulin is prepared by drawing HDPE (High Density Polyethylene) films to be a woven cloth, and laminating LDPE (Low Density Polyethylene) resins on both surfaces of the woven cloth.
  • Fig. 1 shows schematic steps of a process for preparing a general PE tarpaulin.
  • An HDPE woven cloth 7 which is a main material of tarpaulin is woven and positioned in an unwinder 6 to be fetched.
  • the woven cloth 7 fetched from the unwinder 6 is transferred to a pressurizing roll 9 of a first extruding unit 21.
  • an LDPE mixed resin 2 uniformly mixed in a blender mixer 1 for a predetermined time by operation of a motor M is supplied into a hopper 3 of the first extruding unit 21, and molten and mixed by an extruder 4.
  • the resin extruded into high temperature mobile films through a die 5 is coated on one side surface of the woven cloth 7 transferred from the unwinder 6.
  • the resin passes between a cooling roll 8 and the pressurizing roll 9 of the first extruding unit 21, and thus is coated on the woven cloth 7 under pressure.
  • the LDPE mixed resin 2 transferred to a second extruding unit 22 and supplied in the same manner is compressed and coated on the other side surface of the woven cloth 7, to prepare a PE tarpaulin.
  • the completed product is wound around a winder 11 in a roll shape.
  • the PE tarpaulin does not contain environmental contamination substances in production, is recyclable and shows relatively light weight. However, the uses of PE tarpaulin are restricted due to low flexibility and mechanical strength.
  • the PVC tarpaulin is prepared by coating liquid phase PVC on both surfaces of polyester woven cloth and hardening it according to a curing process, or by producing PVC films according to a calendering process, applying heat to both surfaces of the polyester woven cloth, and laminating the PVC films thereon.
  • the PVC tarpaulin which shows high weather resistance, excellent flexibility even in low temperature and high mechanical strength has been widely used for industrial purposes.
  • the PVC tarpaulin is heavy due to its high density, and generates a lot of dioxin in incineration due to environmental hormone substances used in production.
  • a high flexibility and toughness composition could be prepared by melting and mixing thermoplastic elastomer comprising randomly-coupled ethylene and ⁇ -olefin, or styrene-ethylene-butane block copolymer with an olefinic copolymer in a single screw extruder.
  • the resulting composition was uniformed, and coated on one or both surfaces of polypropylene woven cloth (multi-filaments, staple fibers, non-woven fabrics, split yarns, etc.) or polyethylene woven cloth (split yarns) through a T type die. It overcomes disadvantages of the general PE and PVC tarpaulins.
  • an olefinic tarpaulin comprising a woven cloth layer formed by weaving polypropylene or polyethylene, and resin layers formed by melting and mixing at least one of ethylene-propylene copolymer and ethylene-vinylacetate copolymer, and styrene-ethylene-butane block copolymer, and coating the resulting composition on one or both surfaces of the woven cloth layer.
  • the resin layers are formed by melting and mixing 30 to 100wt% of ethylene-propylene copolymer, 50 to 70wt% of ethylene-vinylacetate copolymer, and 0 to 50wt% of styrene-ethylene-butane block copolymer.
  • the ethylene-propylene copolymer comprises 50 to 80wt% of thermoplastic elastomer (ethylene-propylene rubber).
  • the ethylene-vinylacetate copolymer comprises 10 to 28wt% of vinylacetate.
  • the resin composition is compressed and coated at a cylinder temperature of an extruder ranging from 150 to 280°C, and a temperature of a die ranging from 250 to 300°C.
  • a method for preparing an olefinic tarpaulin including the steps of: supplying a woven cloth formed by weaving polypropylene or polyethylene; preparing a resin composition by melting and mixing at least one of ethylene-propylene copolymer and ethylene-vinylacetate copolymer, and styrene-ethylene-butane block copolymer; and compressing and coating the resin composition on one or both surfaces of the woven cloth.
  • the step for preparing the resin composition melts and mixes 30 to 100wt of ethylene-propylene copolymer, 50 to 70wt% of ethylene-vinylacetate copolymer, and 0 to 50wt% of styrene-ethylene-butane block copolymer.
  • the ethylene-propylene copolymer is molten and mixed at a melting index ranging from 20 to 60g/10min.
  • the styrene-ethylene-butane block copolymer is molten and mixed at a melting index ranging from 3 to lOg/lOmin.
  • Fig. 1 is a schematic process diagram showing a process for preparing a general PE tarpaulin
  • Figs. 2 and 3 are structure diagrams illustrating an olefinic tarpaulin in accordance with the present invention, wherein Fig. 2 shows a both-side coated tarpaulin, and Fig. 3 shows an one-side coated tarpaulin.
  • the present invention suggests a method for preparing a following resin composition, and coating it on one or both surfaces of a woven cloth formed by weaving polypropylene or polyethylene.
  • the resin composition of the invention is an olefinic copolymer prepared by melting and mixing ethylene-propylene copolymer or ethylene-vinylacetate copolymer (component A), and styrene-ethylene-butane block copolymer (component B).
  • the olefinic tarpaulin 30 comprises a woven cloth 32 formed by weaving polypropylene or polyethylene, and resin layers 34 and 36 formed by melting and mixing at least one of ethylene-propylene copolymer and ethylene-vinylacetate copolymer, and styrene-ethylene-butane block copolymer, and coating the resulting composition on one or both surfaces of the woven cloth layer 32.
  • component A is ethylene-propylene copolymer where a thermoplastic elastomer (ethylene-propylene rubber) comprising randomly-coupled ethylene and propylene exists in a domain type on a propylene copolymer matrix.
  • the thermoplastic elastomer is 50 to 80wt% of poly-olefinic resin.
  • a melting index of the ethylene-propylene copolymer is preferably 20 to 60g/10min., more preferably 25 to 40g/10min.
  • thermoplastic elastomer If a content of the thermoplastic elastomer is less than 50wt%, sufficient flexibility cannot be obtained. It is also impossible to industrially produce the thermoplastic elastomer over 80wt%. In this case, a melting tension is too high, and thus the process using the facilities of Fig. 1 cannot be performed. In addition, if the melting index is lower than 20g/10min., drawability decreases in the compression and coating process, and if it is over 60g/10min., the thermoplastic elastomer is not smoothly molten and mixed with ethylene-vinylacetate and component B.
  • a content of vinylacetate is preferably 10 to 28wt%, more preferably 15 to 21wt% of poly-olefinic resin.
  • a melting index preferably ranges from 10 to 20g/10min.
  • Component B is styrene-ethylene-butane block copolymer, namely block copolymer comprising styrene polymer block.
  • component B is a three-component copolymer prepared by adding hydrogen to styrene polymer block and butadiene polymer block, and partially generating ethylene block.
  • a melting index of component B is preferably 3 to 10g/10min., more preferably 4.5 to 7g/10min.
  • the melting index is lower than 3g/10min., drawability decreases in the compression and coating process and component B is not smoothly mixed with component A. If it is over 10g/10min., the polymer excessively comprises low molecular weight substances. As a result, the low molecular weight substances lie on the entrance of the T type die of Fig. 1 to cause defects of the products, and make the surfaces of the products sticky to intercept unwinding of the products.
  • the resin composition of the invention comprises 50 to 100wt%, preferably 60 to 95wt% of ethylene-propylene copolymer as component A, and 0 to 50wt%, preferably 5 to 40wt% of styrene-ethylene-butane block copolymer as component B.
  • the resin composition comprises 30 to 50wt%, preferably 20 to 40wt% of ethylene-propylene copolymer and 50 to 70wt%, preferably 40 to 60wt% of ethylene-vinylacetate copolymer as component A, and 0 to 30wt%, preferably 10 to 20wt% of styrene-ethylene-butane block copolymer as component B.
  • the compression and coating process is hardly performed due to excessive melting tension.
  • the ethylene-vinylacetate copolymer is less than 50wt%, a bonding process using radio frequency cannot be performed. Therefore, more than 50wt% of ethylene-vinylacetate copolymer must be mixed so as to perform the bonding process using radio frequency.
  • the resin composition of the invention mainly comprises components A and B, which is not intended to be limiting.
  • a variety of additives can be used within the range of maintaining flexibility, toughness and mechanical strength.
  • various inorganic fillers, master batches thereof, ultraviolet ray stabilizers, antioxidants, antistatic agents, organic or inorganic coloring agents and master batches thereof can be appropriately used.
  • component A and/or B need(s) to be firstly molten and then mixed.
  • the molten components can be mixed by using generally-known means such as a kneader, a single screw extruder, a double screw extruder and a static mixer. If necessary, each component can be dry blended and then turned into a composition during the formation.
  • fibers except flat yarns (tape yarns) comprising single polymers of polypropylene, for example, staple fibers, woven cloths made of cotton yarns, and non-woven fabrics can be used as the woven cloth of the invention.
  • a woven cloth made of split yarns comprising polyethylene can also be employed.
  • the fibers having tensile strength of 2.5 to 7g/D can be selectively used for the woven cloth.
  • the fibers having tensile strength of 6.5 to 7g/D must be used to prepare the olefinic tarpaulin having sufficient mechanical strength for industrial purposes.
  • additives such as master batches comprising concentrated antioxidants, ultraviolet ray stabilizers, flame retardants, antistatic agents, and organic or inorganic coloring agents can be appropriately added without reducing the tensile strength.
  • the resin composition molten and mixed by the extruder is compressed and coated on one or both surfaces of the woven cloth according to the compression and coating process of Fig. 1.
  • a cylinder temperature of the extruder is controlled between 150 and 280°C according to the extrusion state from a die, and a temperature of the die is controlled between 250 and 300°C, preferably at 250°C. If the temperature of the die is lower than 250°C, drawability 0412
  • the resin composition decreases, which restricts an amount of the resin coated on the woven cloth. If it is over 300°C, the resin composition is thermally decomposed, and thus may lose its intrinsic property. However, if the resin or master batch has a high heat resistance property, the process can be performed over 300°C.
  • the olefinic tarpaulin 30 having both-side resin layers 34 and 36 is generally prepared by coating the resin composition on both surfaces of the woven layer 32.
  • a tarpaulin 30' having an one-side resin layer 34' can be prepared by coating the resin composition on one surface of a woven cloth 32'. So as to prepare the olefinic tarpaulin thicker, the resin composition can be coated once more on the resin layer. The thickness of the olefinic tarpaulin can be appropriately controlled.
  • an embossing process can be performed with the coating process of the resin composition by using a cooling roll embossed in various shapes, thereby preparing an embossed tarpaulin.
  • the olefinic tarpaulins comprising the resin compositions in Examples 1 to 5 have higher tensile strength than the PVC tarpaulins of Comparative Examples 1 and 2, the olefinic tarpaulins of Examples 1 to 3 have slightly lower tearing strength than the PVC tarpaulins, and the olefinic tarpaulins of Examples 4 and 5 have tearing strength equivalent to the PVC tarpaulins. Instead, the olefinic tarpaulins of Examples 1 and 2 are lighter in weight than the PVC tarpaulins.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une bâche oléfinique préparée par fusion et mélange d'un copolymère oléfinique, d'un copolymère oléfinique comprenant de l'éthylène et du propylène ou de l'acétate de vinyle couplés de manière aléatoire et un copolymère séquencé de styrène-éthylène-butane dans une extrudeuse à une vis, puis par revêtement de la composition à grande flexibilité et résistance obtenue sur une surface ou les deux surfaces d'un tissu tissé de polypropylène (multifilament) ou d'un tissu tissé de polyéthylène (fils divisés), ainsi qu'un procédé pour préparer cette bâche. La bâche oléfinique selon cette invention comprend un tissu tissé formé par tissage de polypropylène ou de polyéthylène et des couches de résine. Cette bâche est formée par fusion et mélange d'au moins un copolymère d'éthylène-propylène et/ou d'un copolymère d'éthylène-acétate de vinyle et/ou d'un copolymère séquencé de styrène-éthylène-butane, puis par revêtement de la composition obtenue sur une surface ou les deux surfaces de la couche de tissu tissé.
PCT/KR2003/000412 2003-03-03 2003-03-03 Bache olefinique et procede pour la produire WO2004079083A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003214661A AU2003214661A1 (en) 2003-03-03 2003-03-03 Olefinic tarpaulin and method for preparing the same
PCT/KR2003/000412 WO2004079083A1 (fr) 2003-03-03 2003-03-03 Bache olefinique et procede pour la produire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2003/000412 WO2004079083A1 (fr) 2003-03-03 2003-03-03 Bache olefinique et procede pour la produire

Publications (1)

Publication Number Publication Date
WO2004079083A1 true WO2004079083A1 (fr) 2004-09-16

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PCT/KR2003/000412 WO2004079083A1 (fr) 2003-03-03 2003-03-03 Bache olefinique et procede pour la produire

Country Status (2)

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AU (1) AU2003214661A1 (fr)
WO (1) WO2004079083A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111684125A (zh) * 2018-02-07 2020-09-18 保利泰科股份有限公司 具有改善的柔性、粘附力和表面强度的篷布及其制造方法
US11220092B2 (en) 2018-01-04 2022-01-11 Exxonmobil Chemical Patents Inc. Films and methods of making the same
WO2022129163A1 (fr) * 2020-12-17 2022-06-23 Mehler Texnologies Gmbh Surface textile enduite
US11629247B2 (en) 2019-07-23 2023-04-18 Exxonmobil Chemicals Patents Inc. Polymer blends with improved processability for TPO roofing membranes and methods for making same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000062103A (ja) * 1998-08-26 2000-02-29 Fujimori Kogyo Kk 加工布
JP2002120344A (ja) * 2000-10-17 2002-04-23 Mitsubishi Kagaku Sanshi Corp ターポリン
CA2360197A1 (fr) * 2001-05-30 2002-11-30 Korea Tarpaulin Co., Ltd. Bache faisant appel a un compose de resine pour revetement par compression, et methode de preparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000062103A (ja) * 1998-08-26 2000-02-29 Fujimori Kogyo Kk 加工布
JP2002120344A (ja) * 2000-10-17 2002-04-23 Mitsubishi Kagaku Sanshi Corp ターポリン
CA2360197A1 (fr) * 2001-05-30 2002-11-30 Korea Tarpaulin Co., Ltd. Bache faisant appel a un compose de resine pour revetement par compression, et methode de preparation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11220092B2 (en) 2018-01-04 2022-01-11 Exxonmobil Chemical Patents Inc. Films and methods of making the same
CN111684125A (zh) * 2018-02-07 2020-09-18 保利泰科股份有限公司 具有改善的柔性、粘附力和表面强度的篷布及其制造方法
CN111684125B (zh) * 2018-02-07 2023-01-10 保利泰科股份有限公司 具有改善的柔性、粘附力和表面强度的篷布及其制造方法
US11629247B2 (en) 2019-07-23 2023-04-18 Exxonmobil Chemicals Patents Inc. Polymer blends with improved processability for TPO roofing membranes and methods for making same
WO2022129163A1 (fr) * 2020-12-17 2022-06-23 Mehler Texnologies Gmbh Surface textile enduite

Also Published As

Publication number Publication date
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