WO2019070633A2 - Tissu stratifié biodégradable et ses procédés de fabrication et d'utilisation - Google Patents

Tissu stratifié biodégradable et ses procédés de fabrication et d'utilisation Download PDF

Info

Publication number
WO2019070633A2
WO2019070633A2 PCT/US2018/053854 US2018053854W WO2019070633A2 WO 2019070633 A2 WO2019070633 A2 WO 2019070633A2 US 2018053854 W US2018053854 W US 2018053854W WO 2019070633 A2 WO2019070633 A2 WO 2019070633A2
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
weight percent
laminated fabric
natural fibers
laminated
Prior art date
Application number
PCT/US2018/053854
Other languages
English (en)
Other versions
WO2019070633A3 (fr
Inventor
Carol A. CLEMENS
Stephen R. Sharp
Original Assignee
Sanctuary System Llc
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 Sanctuary System Llc filed Critical Sanctuary System Llc
Publication of WO2019070633A2 publication Critical patent/WO2019070633A2/fr
Publication of WO2019070633A3 publication Critical patent/WO2019070633A3/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00—Producing multi-layer textile fabrics
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • B32B5/026—Knitted fabric
    • 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
    • B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different 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
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/0276—Polyester 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • B32B2262/08—Animal fibres, e.g. hair, wool, silk
    • 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
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • 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
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • 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
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • 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
    • B32B2555/00—Personal care
    • 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
    • B32B2601/00—Upholstery

Definitions

  • the presently disclosed subject matter relates to laminated fabrics having improved characteristics, such as biodegradability, absorbency, breathability, and fluid resistance.
  • the presently disclosed subject matter further relates to methods of making and using the disclosed laminated fabrics.
  • Laminated fabrics are commonly used in a wide variety of applications, such as the manufacture of personal care articles, household items, bedding, packaging, and the like.
  • current laminated fabrics are typically constructed with polymeric materials, such as polystyrene, polyethylene, thermoplastic polyurethane, and polypropylene.
  • polystyrene polyethylene
  • thermoplastic polyurethane polypropylene
  • environmental problems such as overflowing landfills are heightened by the stability and longevity of such polymeric materials.
  • the cited polymers are generally very stable and can remain in the environment for up to 100 years.
  • the presently disclosed subject matter is directed to a laminated fabric comprising a breathable fabric layer.
  • the breathable fabric layer comprises about 100 weight percent natural fibers.
  • the breathable fabric layer can comprise a blend of about 50-80 weight percent natural fibers and about 20- 50 weight percent polylactic acid, polyhydroxyalkanoate, polyhydroxybutyrate, or combinations thereof, based on the total weight of the layer.
  • the breathable fabric layer further comprises a waterproof substrate layer bonded to the fabric layer, wherein the substrate layer comprises about 100 weight percent polylactic acid, polyhydroxyalkanoate, polyhydroxybutyrate, or combinations thereof.
  • the disclosed laminated fabric is biodegradable.
  • the fabric layer comprises a knitted material, woven material, nonwoven material, or combinations thereof.
  • the natural fibers are selected from cotton, linen, flax, rayon, cellulose acetate, cellulose triacetate, hemp, jute, ramie, nettle, Spanish broom, kenaf, wool, fur, suede, leather, silk, and combinations thereof.
  • the fabric layer has a basis weight of about 15-200 grams per meter squared (gsm), about 50-200 grams per meters squared (gsm), or about 65- 400 grams per meter squared (gsm).
  • the presently disclosed subject matter is directed to a product produced from the disclosed laminated fabric.
  • the presently disclosed subject matter is directed to a method of producing a biodegradable laminated fabric, the method comprising selecting a fabric layer comprising a breathable fabric comprising about 100 weight percent natural fibers or a blend of natural fibers and polylactic acid, polyhydroxyalkanoate, polyhydroxybutyrate, or combinations thereof (e.g., about 50-80 weight percent natural fibers and about 20-50 weight percent polylactic acid, polyhydroxyalkanoate, polyhydroxybutyrate, or combinations thereof).
  • the method further comprises selecting a waterproof substrate layer comprising about 100 weight percent polylactic acid, polyhydroxyalkanoate, polyhydroxybutyrate, or combinations thereof and bonding the fabric layer to the substrate layer to produce a laminated fabric.
  • the bonding is achieved by heating the substrate layer to a temperature of about 10-20°C above or below its melting temperature, applying pressure of about 10-300 pounds per linear inch, or both.
  • FIG. 1 is a cross-sectional view of a fabric/substrate laminate according to some embodiments of the presently disclosed subject matter.
  • FIG. 2 is a schematic view of one process that can be used to join the layers of the disclosed laminated fabric together.
  • the term "about”, when referring to a value or to an amount of mass, weight, time, volume, concentration, and/or percentage can encompass variations of, in some embodiments +/-20%, in some embodiments +/-10%, in some embodiments +/-5%, in some embodiments +/-1 %, in some embodiments +/-0.5%, and in some embodiments +/-0.1 %, from the specified amount, as such variations are appropriate in the disclosed packages and methods.
  • biodegradable laminate material comprising a biodegradable fabric laminated to a compostable or biodegradable substrate.
  • biodegradable refers to materials that can be readily decomposed by biological agents, such as environmental heat, moisture, and/or microbial action (e.g., bacteria, fungi, and/or algae), as set forth in ASTM D6340-98, the entire content of which is incorporated by reference herein.
  • biodegradable can refer to “100% biodegradable.”
  • compostable refers to a product that satisfies the requirements set by ASTM D6400 (incorporated by referenced herein) for aerobic composting in municipal and/or industrial facilities.
  • laminated fabric 25 can be formed by laminating substrate film 10 to surface fibers 15 of fabric 20.
  • laminated fabric 25 refers to the process and resulting product made by bonding together two or more layers together (e.g., a fabric and a film). Lamination can be accomplished by joining layers together with adhesives, the application of heat and pressure, with spread coating, and/or with extrusion coating.
  • Fabric 20 can include any biodegradable knitted, woven, or nonwoven material known or used in the art.
  • suitable knitted fabrics can include flat knits, circular knits, warp knits, narrow elastics, laces, and the like.
  • woven material refers to a material (e.g., fabric) characterized by intersecting warp and fill yarns interlaced so that they cross each other at an angle (e.g., a right angle).
  • Suitable woven fabrics can be of any construction, such as sateen, twill, plain weave, oxford weave, basket wave, narrow elastic, and the like.
  • nonwoven refers to a fibrous web or sheet that has a structure of individual fibers and/or threads that are interlaid but not in any regular, repeating manner.
  • Suitable nonwoven fabrics can be of any construction, such as meltblown, spun bonded, wet-laid, carded fiber-based staple webs, and the like.
  • Fabric 20 can be constructed from any biodegradable, natural fiber known or used in the art.
  • natural fiber refers to fibers that are obtained from natural sources, such as cellulosic fibers and protein fibers, or those that are formed by the regeneration and/or processing of naturally-occurring fibers and/or products.
  • suitable natural fibers can include cellulosic fibers from cotton, linen, flax, rayon, cellulose acetate, cellulose triacetate, hemp, jute, ramie, nettle, Spanish broom, kenaf, or combinations thereof.
  • suitable natural fibers can include protein fibers, such as wools (sheep, alpaca, vicuna, mohair, cashmere, guanaco, camel, llama, and the like), furs, suedes, leathers, silks, and combinations thereof.
  • protein fibers such as wools (sheep, alpaca, vicuna, mohair, cashmere, guanaco, camel, llama, and the like), furs, suedes, leathers, silks, and combinations thereof.
  • fabric 20 can comprise about 100% natural fibers.
  • fabric 20 can comprise a blend of natural fibers and polylactic acid (PLA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), or combinations thereof.
  • PLA is a biodegradable and bioactive thermoplastic polyester derived from renewable resources, such as corn starch, cassava roots, or sugarcane.
  • PHA is a linear, biodegradable polyester produced in nature by bacterial fermentation of sugar or lipids.
  • PHB is a polyhydroxyalkanoate.
  • the disclosed blends can comprise about 50-80 weight percent natural fibers, such as at least about (or no more than about) 50, 55, 60, 65, 70, 75, or 80 weight percent fibers, based on the total weight of the fabric blend.
  • the disclosed blend can also comprise about 20- 50 weight percent PLA, PHA, and/or PHB, such as at least about (or no more than about) 20, 25, 30, 35, 40, 45, or 50 weight percent, based on the total weight of the blend.
  • the disclosed blend can comprise about 50/50, 60/40, or 80/20 weight percent fibers/PLA, PHB, and/or PHA.
  • the disclosed blends are not limited and can include greater or lesser amounts of natural fibers and/or PLA, PHA, or PHB.
  • Suitable fibers can have a diameter range of about 10-50 microns, such as at least about (or no more than about) 10, 15, 20, 25, 30, 35, 40, 45, or 50 microns.
  • the presently disclosed fabric is not limited and can include fibers with greater or lesser diameters than the range set forth above.
  • the fabric can be blended using any method known or used in the art, such as (but not limited to) mechanical methods during staple fiber preparation and opening before web production. Such methods are well known to those of ordinary skill in the art.
  • fabric 20 can be bleached to remove some or all of the natural coloring of the fibers and/or PLA, PHA, or PHB.
  • the fabric or fabric blend can be dyed to any desired color or colors. Such bleaching and coloring methods are well known in the art.
  • the basis weight of fabric 20 can range from about 15-200 grams per square meter (gsm). Thus, the weight of the fabric can be about 15-200 gsm, 25-175 gsm, 35- 150 gsm, 45-125 gsm, 55-100 gsm, or 65-75 gsm. However, it should be appreciated that fabric 20 is not limited and can have a greater or lesser basis weight than the ranges set forth herein.
  • the term "basis weight” refers to the total weight of the material per unit area, as set forth in ASTM D3776-96, incorporated herein by reference.
  • fabric 20 can be pre-bonded to improve its durability, strength, hand, aesthetics and/or other properties.
  • the fiber can be thermally, ultrasonically, adhesively, and/or mechanically pre-bonded, as would be known to those of ordinary skill in the art.
  • the pre-bonding on the fabric layer is minimal to achieve optimal bonding between the fabric layer and the substrate layer.
  • the fibers in an unbonded or loosely bonded fiber layer can more easily intermesh with the substrate layer, so that the fibers are less likely to lint or abrade away in the laminated fabric.
  • fabric layer 20 is pre-bonded at the minimum contact area and temperature setting that will allow winding and unrolling.
  • Substrate 10 can comprise any biodegradable and/or compostable material known or used in the art, such as (but not limited to) PLA, PHA, and/or PHB.
  • the substrate can comprise about 100% PLA, PHA, or PHB.
  • the substrate can comprise about 20-50 weight percent PLA, PHA, and/or PHB blended with about 50-80 weight percent of one or more natural fibers.
  • the substrate can comprise at least about (or no more than about) 20, 25, 30, 35, 40, 45, or 50 weight percent PLA, PHA, and/or PHB, based on the total weight of the substrate.
  • the substrate can further comprise at least about (or no more than about) 50, 55, 60, 65, 70, 75, or 80 weight percent natural fiber(s), based on the total weight of the layer.
  • Substrate 10 can be waterproof.
  • the term “waterproof” refers to the characteristic of being completely impermeable to liquids and/or oils in accordance with ASTM D1079, incorporated by reference herein. Accordingly, liquids and/or oils are unable to penetrate substrate 10.
  • the waterproof characteristic of the substrate is achieved through selection of the materials used to construct the substrate, such as (but not limited to) PLA, PHA, PHB and blends thereof.
  • the waterproof characteristic of the substrate can be achieved or enhanced by applying a waterproof coating to one or both sides.
  • the waterproof coating can be biodegradable.
  • the total basis weight of the substrate can be about 50-200 gsm.
  • the substrate weight can range from about 50-200, 60-175, 70-150, 80-125, or 90-100 gsm.
  • the basis weight of substrate 20 can be greater or lesser than the ranges set forth herein.
  • fabric 20 can be laminated to substrate 10 using a heated roll process.
  • substrate 10 can be heated via a heated roll and then subjected to pressure to form the disclosed laminated fabric.
  • a layer of substrate 10 can be supplied from substrate supply roll 30 through one or more guide rolls 35, and a layer of fabric 20 can be supplied from fabric supply roll 45 through one or more guide rolls 35 to heated roll 40, as indicated by Arrows A.
  • the substrate and fabric materials are disposed in surface-to- surface contact with each other.
  • the fabric and substrate materials are superimposed such that their inner surfaces 50 face one another (i.e., they are in contact) once they reach the heated roll.
  • Outer surface 55 of substrate 10 is configured to directly contact heated roll 40.
  • the outer surface of the fabric material is positioned on the opposite side (exterior) of the substrate, and does not contact the heated roll.
  • Heated roll 40 acts as a heat source for at least partially melting or softening substrate 10.
  • the heated roll can have a temperature of at least about the melting temperature of substrate 10.
  • the heated roll can be heated to a temperature of about 5-10°C less than the melting temperature of PLA (e.g., 140-155°C).
  • the temperature of the heated roll can vary greatly depending on the construction of fabric 20 (substrate 10 in particular).
  • the heated roll can be heated to within about +/- 10-20% of the melting temperature of the substrate.
  • Nip roll 60 can be heated if desired, but can also be cooled or non-heated. Process times can vary from about five minutes at higher temperatures to about two days at very low temperatures. As the heated roll temperature is increased, process time can be reduced. Conversely, at lower process temperatures, the time required to create a usable substrate-to-fabric bond can increase rapidly. For a given temperature, higher pressures at nip roll 60 decreases the time required for lamination.
  • Laminated fabric 25 is then wound onto laminate rewind roll 65 by one or more guide rolls 35, shown by Arrow C.
  • the laminated fabric product can then be cut to a desired shape and size for an intended use.
  • process times can range from about less than 1 second to about 30 seconds.
  • laminated fabric 25 are not limited and can include any lamination method known or used in the art.
  • the disclosed laminated fabric can be constructed without the use of adhesives.
  • the total basis weight of the laminated fabric can be about 65-400 gsm.
  • the laminate weight can range from about 65-400, 75-375, 85-350, 95-325, 105-300, 1 15- 275, 125-250, 135-225, 145-200, or 155-175 gsm.
  • the basis weight of the laminated fabric can be greater or lesser than the ranges set forth herein.
  • laminated fabric 25 does not include additives to enable biodegradability. Rather, the materials used to construct substrate 10 and fabric 20 are biodegradable and thereby confer biodegradable characteristics to the laminate structure without the need for additives. For example, prior art polypropylene nonwovens require additives to induce degradation. Thus, manufacture of the disclosed laminated fabric is less costly and is more ecologically-friendly compared to prior art materials because no additives are required.
  • the biodegradable characteristics render the disclosed laminated fabric environmentally friendly. Particularly, solid waste in landfills, garbage receptacles, and the like are reduced.
  • the disclosed laminated fabric reduces the degradable life cycle of products made therefrom. For example, the degradable life cycle can be reduced from 15 years to about 5 years in some embodiments.
  • laminated fabric 25 is constructed from 100% or about 100% biodegradable materials, the production of greenhouse gases is thereby reduced.
  • Laminated fabric 25 is also waterproof. Particularly, the materials used to construct substrate 10 confer waterproofing characteristics such that the laminate has a high resistance to liquid and/or oil transmission.
  • the disclosed laminated fabric is breathable.
  • breathable refers a material that is permeable to vapor and/or gas but forms a barrier against the passage of liquid.
  • the laminated fabric has a moisture vapor transmission rate (MVTR) of at least about 100 g/m 2 /day.
  • Laminated fabric 25 can be used in any desired application where waterproofing, biodegradability, and/or breathability are desired.
  • the disclosed laminated fabric can be used to construct products in the personal care, household item, bedding, and/or packaging industries.
  • the cited applications are not intended to be limiting, and the disclosed materials can be used with any application known in the art.
  • meltblown fabric Six samples of meltblown fabric were prepared on a Reicofil Exxon type meltblown system as set forth in Table 1 below.
  • the die configuration used was: 35- hole per inch spinneret 1 .2 mm air gap/1 .2 mm setback.
  • the throughput was 31 kg/hour/meter.
  • Raw material was PLA (INGEO® PLA polymer 6202D, available from NatureWorks, LLC, Minnetonka, Minnesota). Table 1
  • Samples were tested using a simple method of placing fabric on top of a paper towel with cotton facing up and laminated meltblown layer down adjacent to the paper towel. 25 mL of water was poured onto the cotton side and allowed to wick to its maximum extent. Slight pressure was then applied to the fabric with the palm of the hand. The amount of water that bled through to the paper towel was then observed. Sample 26 from table 2 performed the best with no water bleeding through. Other samples had consistent pea-size to quarter-size wet spots on the paper towel. Further analysis will be made of porosity and moisture barrier properties.
  • the wipes will include 150 gsm cotton hydroentangled fabric laminated to an about 100 gsm PLA meltblown fabric. The best samples will then be selected and 1000- 2000 squares will be cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un matériau stratifié biodégradable comprenant une couche de tissu stratifiée sur une couche de substrat compostable ou biodégradable. La couche de tissu est respirante et comprend environ 100 pour cent en poids de fibres naturelles, ou un mélange de fibres naturelles et d'acide polylactique. La couche de substrat comprend environ 100 pour cent en poids d'acide polylactique. Le tissu stratifié de l'invention présente des caractéristiques améliorées, en termes, par exemple, de biodégradabilité, de pouvoir absorbant, de respirabilité et de résistance aux fluides.
PCT/US2018/053854 2017-10-04 2018-10-02 Tissu stratifié biodégradable et ses procédés de fabrication et d'utilisation WO2019070633A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762567780P 2017-10-04 2017-10-04
US62/567,780 2017-10-04

Publications (2)

Publication Number Publication Date
WO2019070633A2 true WO2019070633A2 (fr) 2019-04-11
WO2019070633A3 WO2019070633A3 (fr) 2019-05-16

Family

ID=65994845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/053854 WO2019070633A2 (fr) 2017-10-04 2018-10-02 Tissu stratifié biodégradable et ses procédés de fabrication et d'utilisation

Country Status (1)

Country Link
WO (1) WO2019070633A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101028021B1 (ko) * 2007-06-27 2011-04-13 기아자동차주식회사 폴리락트산을 시쓰로 포함하는 시쓰-코아형 복합섬유와천연섬유를 이용한 바이오보오드 및 이의 제조방법
FI124772B (fi) * 2012-10-26 2015-01-30 Stora Enso Oyj Menetelmä biohajoavan pakkausmateriaalin valmistamiseksi, biohajoava pakkausmateriaali ja siitä valmistettu pakkaus tai astia
FI124410B (en) * 2012-10-26 2014-08-15 Stora Enso Oyj Method for the production of biodegradable packaging material, biodegradable packaging material and packaging or container thereof
KR20150120810A (ko) * 2014-04-18 2015-10-28 (주)엘지하우시스 폴리락타이드 수지 및 폴리하이드록시알카노에이트 수지를 포함한 수지 조성물과, 이를 이용하여 제조한 필름 및 바닥재
KR101601857B1 (ko) * 2014-04-29 2016-03-09 주식회사 서연이화 자동차 내장 기재용 친환경 열가소성 펠트 적층물

Also Published As

Publication number Publication date
WO2019070633A3 (fr) 2019-05-16

Similar Documents

Publication Publication Date Title
JP4650206B2 (ja) 生分解性複合繊維、および、これを用いた繊維構造物と吸収性物品
US10240268B2 (en) Meltblown nonwoven web comprising reclaimed polypropylene component and reclaimed sustainable polymer component and method of making same
RU2640243C2 (ru) Биоразлагаемая пленка и ламинат
AU700005B2 (en) Technical and non-technical textile products and packaging materials
Pourmohammadi Nonwoven materials and joining techniques
Karthik et al. Nonwovens: process, structure, properties and applications
US20110057346A1 (en) Art of using regenerated fibers in multi process non-wovens
JPH10511318A (ja) ミクロ多孔質フィルム／不織布複合体
CN103987504A (zh) 用于形成包含可再生性生物聚合物的热塑性组合物的方法
KR101639646B1 (ko) 인조잔디매트 제조방법
BE1023505B1 (nl) Non-woven-structuur met vezels die gekatalyseerd zijn door een metalloceenkatalysator
CN101195282A (zh) 一种弹性层压制品及其制造工艺
CN104494219A (zh) 一种抗菌无纺布
JP2015048569A (ja) 不織布及び該不織布の製造方法
JP5208861B2 (ja) 吸音性積層材および吸音性積層材成形物
Maity Jute needlepunched nonwovens: manufacturing, properties, and applications
WO2015002555A1 (fr) Non-tissé biodégradable, inflammable ou ininflammable, procédé de fabrication et d'utilisation
Sengupta et al. Properties of poly-vinyl alcohol bonded jute (Corchorus olitorius) nonwoven fabric and its performance as disposable carry bag
WO2019070633A2 (fr) Tissu stratifié biodégradable et ses procédés de fabrication et d'utilisation
JP2020512947A (ja) 再生プラスチック複合材を製造するための方法
CN201931651U (zh) 复合热熔吸水针刺无纺布
EP3661738B1 (fr) Procédé de production d'un matériau composite ayant des propriétés de biodégradabilité pour la fabrication d'articles de vêtement et matériau composite obtenu par ledit procédé
CN114901464B (zh) 用于密封饮料胶囊或饮料粉囊包的可堆肥的盖子以及用其密封的胶囊和粉囊包
ATE526443T1 (de) Verbundwerkstoffe und verfahren zur herstellung
US20150159322A1 (en) Process for producing polyvinyl alcohol articles

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18864339

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 03/08/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 18864339

Country of ref document: EP

Kind code of ref document: A2