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WO2015170875A1 - Wallpaper using pla and pha blend resin and method for manufacturing the same - Google Patents

Wallpaper using pla and pha blend resin and method for manufacturing the same Download PDF

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Publication number
WO2015170875A1
WO2015170875A1 PCT/KR2015/004521 KR2015004521W WO2015170875A1 WO 2015170875 A1 WO2015170875 A1 WO 2015170875A1 KR 2015004521 W KR2015004521 W KR 2015004521W WO 2015170875 A1 WO2015170875 A1 WO 2015170875A1
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WO
WIPO (PCT)
Prior art keywords
resin
pla
wallpaper
weight
parts
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2015/004521
Other languages
French (fr)
Inventor
Min Lee
Cheng Zhe Hwang
Seok Bong Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LX Hausys Ltd
Original Assignee
LG Hausys Ltd
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 LG Hausys Ltd filed Critical LG Hausys Ltd
Priority to CN201580002685.6A priority Critical patent/CN105745378A/en
Priority to EP15788622.7A priority patent/EP3047069A4/en
Priority to JP2016532068A priority patent/JP6284108B2/en
Publication of WO2015170875A1 publication Critical patent/WO2015170875A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
    • 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
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B5/08—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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/02—Patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • D21H27/34—Continuous materials, e.g. filaments, sheets, nets
    • D21H27/36—Films made from synthetic macromolecular compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber 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
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/067—Wood 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
    • B32B2262/14—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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/404—Multi-coloured
    • 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
    • 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
    • B32B2307/58—Cuttability
    • 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
    • B32B2307/582—Tearability
    • 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
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2607/00—Walls, panels
    • B32B2607/02—Wall papers, wall coverings

Definitions

  • the present invention relates to a wallpaper using a PLA and PHA blend resin and a method for manufacturing the same and, more specifically, to a wallpaper provided with a resin layer including a PLA and PHA blend resin and joined on a base sheet and a method for manufacturing the same.
  • a poly vinyl chloride (PVC) wallpaper is the so-called silk wallpaper, wherein the paper is coated with a PVC resin. Therefore, the PVC wallpaper is currently the most preferable wall paper owing to the silk-like smooth surface texture.
  • the PVC wallpaper uses the PVC resin made of oil as a raw material such that the PVC wallpaper results in the continuous price rise due to the depletion of oil resources, great energy consumption in the process of the manufacturing thereof and the large release of greenhouse gases such as CO 2 andthelike.
  • the PVC wallpaper needs 500 years or more time for the biodegradation thereof, and releases great hazardous substances such as environmental hormones, poisonous gases and the like when incinerating the same, thereby causing severe environmental pollution.
  • a PLA wallpaper and the like have been recently developed so as to be biodegradable after the common use thereof by substituting the PVC with a biobased environment-friendly resin such as a PLA resin and the like.
  • Fig. 1 is a sectional view showing the structure of a prior art PLA wallpaper.
  • a prior art PLA wallpaper includes a base sheet 10; a resin layer 20 formed of a PLA resin on the base sheet 10; and a printed layer 20 formed on the resin layer 20.
  • the PLA wallpaper however, has disadvantage that the resin layer formed of the PLA resin joined on the base sheet 10 is rigid and fragile such that the touch of the wallpaper surface is not soft and the flexibility thereof is low, thereby making the hanging thereof complicated in winter.
  • Korean patent laid-open publication No. 10-2010-0048193 discloses such a PLA wallpaper.
  • the present invention has been made in an effort to solve the above-mentioned problems occurring in the prior arts, and it is an objective of the present invention to provide a wallpaper, wherein a biobased resin such as a PHA resin and the like, which is flexible and has elasticity, is mixed with a PLA resin such that the wallpaper has a smooth surface and is easy to be hung in winter.
  • a biobased resin such as a PHA resin and the like, which is flexible and has elasticity
  • the present invention has further objective to provide a wallpaper using a biobased PLA and PHA blend resin extracted from plant such as corn and the like so as to reduce hazardous substances and odor substances, thereby preventing various diseases and sick house syndromes, and a method for manufacturing the same.
  • the present invention provides a wallpaper comprising: a base sheet: and a resin layer including a PLA and PHA blend resin and joined on the base sheet.
  • the present invention provides a method for manufacturing a wallpaper, comprising the steps of:
  • the wallpaper using the PLA and PHA blend resin and a method for manufacturing the same according to the present invention described above have the following effects.
  • the resin layer is formed of a blend resin in which a PLA resin is mixed with a PHA resin so as to apply flexibility of the resin layer such that the wallpaper has a smooth surface and is easy to hang in winter.
  • the wallpaper uses the biobased PLA and PHA blend resin extracted from plant such as corn and the like so as to reduce hazardous substances and odor substances, thereby preventing various diseases and sick house syndromes.
  • Fig. 1 is a sectional view showing the structure of a prior art PLA wallpaper.
  • Fig. 2 is a sectional view showing the structure of a wallpaper using a PLA and PHA blend resin according to a preferred embodiment of the present invention.
  • Fig. 3 is flow chart for explaining a method for manufacturing a wallpaper using a PLA and PHA blend resin according to a preferred embodiment of the present invention.
  • a wallpaper using a PLA and PHA blend resin includes a base sheet 100, a resin layer 200 and a printed layer 300.
  • the base sheet 100 a normal base sheet well-known in the art may be used without limitations and, for example, the existing base sheet used for the manufacturing of the silk wallpaper can also be used.
  • the examples of the base sheet 100 include the vellum paper or the non-woven fabric such as polyester/pulp composite non-woven fabric and the like but not limited thereto.
  • the base sheet 100 preferably has a basis weight of 60 g/m2 to 200 g/m2.
  • the basis weight of the base sheet is less than 60 g/m2, the strength is too weak to cause damage to the wallpaper such that the wallpaper is likely to be torn and the like in the process of hanging or using the same. To the contrary, if the basis weight of the base sheet exceeds 200 g/m2, there might be problems that the wallpaper becomes heavy, coming off in the connection portions thereof and curled in the process of hanging thereof, thereby possibly resulting in the price rise.
  • the thickness of the base sheet is set according to the use of the wallpaper but not particularly limited, wherein the base sheet can normally have a thickness of 0.1 mm to 0.2 mm.
  • the resin layer 200 includes a PLA and PHA blend resin.
  • the weight ratio of the PLA resin and PHA resin in the blend resin is preferably in the range of 90:10 ⁇ 10:90.
  • the resin layer 200 may further include an inorganic filler, a plasticizer, additives such as a processing aid, a pigment, a lubricant and the like in addition to the PLA and PHA blend resin.
  • the resin layer 200 may include 50 ⁇ 200 parts by weight of an inorganic filler, 5 ⁇ 100 parts by weight of a plasticizer, 1 ⁇ 20 parts by weight of a processing aid, 5 ⁇ 30 parts by weight of a pigment and 0.1 ⁇ 10 parts by weight of a lubricant based on 100 parts by weight of the PLA and PHA blend resin.
  • the PLA resin in the blend resin is a thermoplastic polyester made by polymerizing the lactide or lactic acid obtained by fermenting plants such as renewable corn and the like, and has no relation with the depletion of fossil resources but has environmental-friendly characteristics so as to be easily biodegradable by burying and the like.
  • This PLA resin may be normally divided into D-PLA, L-PLA, D, L-PLA or meso-PLA and the like, and the present invention is not limited to the kind thereof but may use the PLA resin alone or in combination of two or more kinds.
  • the PLA resin to be used may be formed by polymerizing the lactic acid or lactide as described above, and may also be copolymerized with a glycol compound such as ethylene glycol or propylene glycol, dicarboxylate such as ethanedioic acid or terephthalic acid, hydroxy carboxylic acid such as glycolic acid or 2-hydroxybenzoic acid, or appropriate monomers such as lactone, for example, caprolactone or propiolactone, as necessary.
  • a glycol compound such as ethylene glycol or propylene glycol
  • dicarboxylate such as ethanedioic acid or terephthalic acid
  • hydroxy carboxylic acid such as glycolic acid or 2-hydroxybenzoic acid
  • lactone for example, caprolactone or propiolactone
  • the PHA resin in the blend resin is the abbreviation for Poly Hydroxyl Alkanoate and a generic term for hydroxy acid polyesters with various carbon side chains.
  • the PHA resin is produced by the polymerization of D(-)-3-hydroxy fatty acid CoA by the polymerization of the polymerase in the granulosa.
  • PHA which is the polymer of hydroxy acid having side chains of various lengths or is its copolymer with 3-hydroxybutyric acid in certain kinds of germs.
  • the resin layer is applied with flexibility, improving the touch of the wallpaper surface.
  • the PLA resin and PHA resin can be mixed together at a weight ratio of 90:10 ⁇ 10:90 in the blend resin.
  • PLA resin and PHA resin at a weight ratio of 80:20 ⁇ 40:60 and more preferably at a weight ratio of 70:30 ⁇ 50:50.
  • the inorganic filler to be added to the blend resin can be added in amount of 50 ⁇ 200 parts by weight, preferably 70 ⁇ 180 parts by weight, and more preferably 100 ⁇ 150 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
  • any one or more selected from a group consisting of calcium carbonate, quick-lime, potassium bicarbonate, talc and silica can be used. It is preferable to use calcium carbonate having relatively low costs.
  • the plasticizer to be added to the blend resin can be added in amount of 5 ⁇ 100 parts by weight and preferably 20 ⁇ 60 wparts by weight based on 100 parts by weight of the PLA and PHA blend resin.
  • plasticizer it is possible to use non-phthalate plasticizer.
  • the non-phthalate plasticizer flexibilizes the PLA resin so as to maximize thermoplasticity, thereby facilitating the molding processing at appropriate temperature. It is preferable in the present invention to use Acetyl Tributyl Citrate (ATBC), which is an environment-friendly plasticizer, as a non-phthalate plasticizer, but not limited thereto.
  • ATBC Acetyl Tributyl Citrate
  • the processing aid to be added to the blend resin can be added in amount of 1 ⁇ 20 parts by weight ad preferably 5 ⁇ 15 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
  • acrylic copolymer As for the processing aid, it is possible to use acrylic copolymer.
  • the acrylic copolymer serves to secure machinability by reinforcing the melt strength of the PLA resin.
  • the weight average molecular weight Mw of the acrylic copolymer is not particularly limited, it is preferably to use the acrylic copolymer having the weight average molecular weight Mw in the range of 1,000,000 ⁇ 6,000,000 and preferably 2,000,000 ⁇ 5,000,000 in consideration of the improvement of the melt strength and the compatibility with other materials at the time of processing.
  • the pigment to be added to the blend resin can be added in amount of 5 ⁇ 30 parts by weight and preferably 10 ⁇ 20 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
  • the pigment it is possible to inject titanium dioxide TiO 2 soastoapplyashieldingfunctiontothewallpaper,therebypreventingbasepatternsfrombeingexposedtothesurface.
  • the lubricant to be added to the blend resin can be added in amount of 0.1 ⁇ 10 parts by weight and preferably 0.5 ⁇ 5 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
  • the lubricant prevents the resin from being stuck to processing facilities in the process of processing the resin layer 200.
  • lubricant and an environment-friendly higher fatty acid is used in the present invention. More specifically, it is possible to use stearic acid which is a saturated higher fatty acid having carbon number 18 but not limited thereto.
  • an anti-hydrolysis agent can be further added as another additive to the blend resin.
  • the thickness of the resin layer 200 formed in the above composition is set according to the use for applying the wallpaper but not particularly limited. Normally, the resin layer 200 has a thickness of 0.1mm to 0.2mm.
  • the printed layer 300 can be additionally provided to the resin layer 200.
  • the printed layer 300 applies various patterns and/or color to the wallpaper, thereby improving the appearance.
  • a method for forming the printed layer 300 is not particularly limited and may include a well-known printing method, for example, Gravure Printing, transfer printing, digital printing, rotary screen printing and the like.
  • an embossed pattern layer (not shown) can be additionally provided on the resin layer 200 and/or printed layer 300.
  • the embossed pattern layer can additionally apply three-dimensional effects to the wallpaper.
  • a method for forming the embossed pattern layer is not particularly limited and, for example, the embossed pattern layer can be formed by carrying out rolling with a roller provided with patterns with respect to the resin layer 200 or printed layer 300, or by making the resin layer 200 including appropriate foaming agent and the like and carrying out well-known foaming and gelling process and the like with respect to the resin layer 200.
  • the method for manufacturing wall paper according to the present invention described as above comprises the steps of: preparing a compound by adding a PLA and PHA blend resin, an inorganic filler, a plasticizer and additives in a kneader mixer or a banbury mixer; forming a resin layer with the compound through a calendaring method; and joining the resin layer to a base sheet.
  • the PLA resin and PHA resin can be mixed together at a weight ratio of 90:10 ⁇ 10:90 in the blend resin.
  • the PLA resin and PHA resin are preferably mixed at a weight ratio of 80:20 ⁇ 40:60 and more preferably at a weight ratio of 70:30 ⁇ 50:50.
  • the resin layer 200 may further include an inorganic filler, a plasticizer, and additives such as a processing aid, a pigment, a lubricant and the like.
  • a compound is prepared by adding 50 ⁇ 200 parts by weight of an inorganic filler, 5 ⁇ 100 parts by weight of a plasticizer, 1 ⁇ 20 parts by weight of a processing aid, 5 ⁇ 30 parts by weight of a pigment and 0.1 ⁇ 10 parts by weight of a lubricant based on 100 parts by weight of the blend resin, in which the PLA resin and the PHA resin are mixed by stirred in a banbury mixer or kneader mixer.
  • the compound mixed with the additives is subject to heating at a temperature of 100 ⁇ 200°C and more preferably 130 ⁇ 170°C so as to be gelled.
  • the compound is additionally mixed through a mixing roll and a warming roll, and then passes through a calendar roller so as to form the resin layer 200.
  • the temperature of the mixing roll and the warming roll is maintained in the range of 80 ⁇ 160°C and preferably in the range of 100 ⁇ 140°C, and the temperature of the calendar roll is preferably maintained in the range of 100 ⁇ 160°C.
  • the resin layer 200 and the base sheet 100 are joined using a compression roll so as to finish a semi-product of the wallpaper.
  • a printed layer 300 is formed by printing various patterns, designs and the like on the resin layer 200 of the wallpaper semi-product, wherein the method for forming the printing layer 300 is not particularly limited but may include a well-known printing method such as Gravure Printing, transfer printing, digital printing, rotary screen printing and the like.
  • the printing can be carried out immediately after the step of forming the resin layer 200 described above and can also be carried out after the foaming step of the resin layer 200 or the step of forming the embossed pattern layer.
  • the embossed pattern layer forming method is not particularly limited and, as for the method, a well-known method of compressing the resin layer 200 with an embossing roll having embossing patterns can be used.
  • the resin layer 200 is joined to the base sheet 100 by using the compression roll, thereby producing a wallpaper semi-product.
  • various patterns and designs are printed on the resin layer 200 of the wallpaper semi-product by the gravure printing method, thereby forming a printed layer 300.
  • an embossed pattern layer is formed by the well-known method of compressing using an embossing roll on the resin layer 200 of the wallpaper semi-product, thereby applying three-dimensional effects to the surface of the wallpaper. After that, the wallpaper is finished through cutting and packing steps.
  • the additives such as 150 parts by weight of an inorganic filler, 40 parts by weight of a plasticizer, 10 parts by weight of a processing aid, 10 parts by weight of a pigment and 2 parts by weight of a lubricant are added to the blend resin and then the resin is maintained at a temperature in the range of 130 ⁇ 150 °C for 10 ⁇ 30 minutes for the gelation of the mixture.
  • the gelled mixture is stored in a hopper maintained at a temperature in the range of 100 ⁇ 130°C.
  • the stored compound is processed in the shape of pellets through a single screw extruder.
  • the temperatures of the cylinder and the die of the extruder are respectively maintained at 100°C and 130°C.
  • a wallpaper semi-product is produced by topping the compound on the wallpaper base material by the single extruder provided with a T-die, wherein the temperature of the cylinder of the extruder is maintained in the range of 100 ⁇ 140°C and the temperature of the T-die is maintained in the range of 130 ⁇ 165°C.
  • the printing and the embossing can be carried out in the same manners as the embodiment such that wallpaper having various printed and embossed patterns applied on the surface thereof can be manufactured.
  • the comparison example has disadvantages that the procedure is more complicated in comparison with that of the embodiment example.
  • the melt viscosity of the compound becomes high such that the uniform topping of the compound becomes difficult if the temperature of the T-die is low, while the compound is likely to be decomposed such that the basic properties as the wallpaper becomes lost if the temperature is too high.
  • the wallpaper using the PLA and PHA blend resin and a method for manufacturing the same, according to the present invention, are not limited to the embodiments described hereinabove but can be implemented through various modification and changes applied within the range of the technical idea of the invention.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

The present invention relates to a wallpaper using a PLA and PHA blend resin and a method for manufacturing the same and, more specifically, to a wallpaper provided with a resin layer including PLA and PHA blend resin and joined on a base sheet and a method for manufacturing the same.

Description

WALLPAPER USING PLA AND PHA BLEND RESIN AND METHOD FOR MANUFACTURING THE SAME
The present invention relates to a wallpaper using a PLA and PHA blend resin and a method for manufacturing the same and, more specifically, to a wallpaper provided with a resin layer including a PLA and PHA blend resin and joined on a base sheet and a method for manufacturing the same.
In general, a poly vinyl chloride (PVC) wallpaper is the so-called silk wallpaper, wherein the paper is coated with a PVC resin. Therefore, the PVC wallpaper is currently the most preferable wall paper owing to the silk-like smooth surface texture.
However, the PVC wallpaper uses the PVC resin made of oil as a raw material such that the PVC wallpaper results in the continuous price rise due to the depletion of oil resources, great energy consumption in the process of the manufacturing thereof and the large release of greenhouse gases such as CO2andthelike.
In addition, the PVC wallpaper needs 500 years or more time for the biodegradation thereof, and releases great hazardous substances such as environmental hormones, poisonous gases and the like when incinerating the same, thereby causing severe environmental pollution.
In order to resolve the problems, a PLA wallpaper and the like have been recently developed so as to be biodegradable after the common use thereof by substituting the PVC with a biobased environment-friendly resin such as a PLA resin and the like.
Fig. 1 is a sectional view showing the structure of a prior art PLA wallpaper.
As shown in Fig. 1, a prior art PLA wallpaper includes a base sheet 10; a resin layer 20 formed of a PLA resin on the base sheet 10; and a printed layer 20 formed on the resin layer 20.
The PLA wallpaper, however, has disadvantage that the resin layer formed of the PLA resin joined on the base sheet 10 is rigid and fragile such that the touch of the wallpaper surface is not soft and the flexibility thereof is low, thereby making the hanging thereof complicated in winter.
As an example, Korean patent laid-open publication No. 10-2010-0048193 discloses such a PLA wallpaper.
Accordingly, the present invention has been made in an effort to solve the above-mentioned problems occurring in the prior arts, and it is an objective of the present invention to provide a wallpaper, wherein a biobased resin such as a PHA resin and the like, which is flexible and has elasticity, is mixed with a PLA resin such that the wallpaper has a smooth surface and is easy to be hung in winter.
Further, the present invention has further objective to provide a wallpaper using a biobased PLA and PHA blend resin extracted from plant such as corn and the like so as to reduce hazardous substances and odor substances, thereby preventing various diseases and sick house syndromes, and a method for manufacturing the same.
To achieve the above objectives, the present invention provides a wallpaper comprising: a base sheet: and a resin layer including a PLA and PHA blend resin and joined on the base sheet.
Further, the present invention provides a method for manufacturing a wallpaper, comprising the steps of:
preparing a compound by adding a PLA and PHA blend resin, an inorganic filler, a plasticizer and additives in a kneader mixer or a banbury mixer; forming a resin layer with the compound by a calendaring method; and joining the resin layer to a base sheet.
The wallpaper using the PLA and PHA blend resin and a method for manufacturing the same according to the present invention described above have the following effects.
The resin layer is formed of a blend resin in which a PLA resin is mixed with a PHA resin so as to apply flexibility of the resin layer such that the wallpaper has a smooth surface and is easy to hang in winter.
Further, the wallpaper uses the biobased PLA and PHA blend resin extracted from plant such as corn and the like so as to reduce hazardous substances and odor substances, thereby preventing various diseases and sick house syndromes.
Fig. 1 is a sectional view showing the structure of a prior art PLA wallpaper.
Fig. 2 is a sectional view showing the structure of a wallpaper using a PLA and PHA blend resin according to a preferred embodiment of the present invention.
Fig. 3 is flow chart for explaining a method for manufacturing a wallpaper using a PLA and PHA blend resin according to a preferred embodiment of the present invention.
<Explanation of essential reference numerals in drawings>
100: base sheet
200: resin layer
300: printed layer
Referring to Fig. 2, a wallpaper using a PLA and PHA blend resin, according to a preferred embodiment of the present invention, includes a base sheet 100, a resin layer 200 and a printed layer 300.
As for the base sheet 100, a normal base sheet well-known in the art may be used without limitations and, for example, the existing base sheet used for the manufacturing of the silk wallpaper can also be used.
Therefore, the examples of the base sheet 100 include the vellum paper or the non-woven fabric such as polyester/pulp composite non-woven fabric and the like but not limited thereto.
The base sheet 100 preferably has a basis weight of 60 g/㎡ to 200 g/㎡.
If the basis weight of the base sheet is less than 60 g/㎡, the strength is too weak to cause damage to the wallpaper such that the wallpaper is likely to be torn and the like in the process of hanging or using the same. To the contrary, if the basis weight of the base sheet exceeds 200 g/㎡, there might be problems that the wallpaper becomes heavy, coming off in the connection portions thereof and curled in the process of hanging thereof, thereby possibly resulting in the price rise.
The thickness of the base sheet is set according to the use of the wallpaper but not particularly limited, wherein the base sheet can normally have a thickness of 0.1 mm to 0.2 mm.
The resin layer 200 includes a PLA and PHA blend resin.
The weight ratio of the PLA resin and PHA resin in the blend resin is preferably in the range of 90:10 ~ 10:90.
Further, the resin layer 200 may further include an inorganic filler, a plasticizer, additives such as a processing aid, a pigment, a lubricant and the like in addition to the PLA and PHA blend resin.
More specifically, the resin layer 200 may include 50 ~ 200 parts by weight of an inorganic filler, 5 ~ 100 parts by weight of a plasticizer, 1 ~ 20 parts by weight of a processing aid, 5 ~ 30 parts by weight of a pigment and 0.1 ~ 10 parts by weight of a lubricant based on 100 parts by weight of the PLA and PHA blend resin.
The PLA resin in the blend resin is a thermoplastic polyester made by polymerizing the lactide or lactic acid obtained by fermenting plants such as renewable corn and the like, and has no relation with the depletion of fossil resources but has environmental-friendly characteristics so as to be easily biodegradable by burying and the like.
This PLA resin may be normally divided into D-PLA, L-PLA, D, L-PLA or meso-PLA and the like, and the present invention is not limited to the kind thereof but may use the PLA resin alone or in combination of two or more kinds.
Further, the PLA resin to be used may be formed by polymerizing the lactic acid or lactide as described above, and may also be copolymerized with a glycol compound such as ethylene glycol or propylene glycol, dicarboxylate such as ethanedioic acid or terephthalic acid, hydroxy carboxylic acid such as glycolic acid or 2-hydroxybenzoic acid, or appropriate monomers such as lactone, for example, caprolactone or propiolactone, as necessary.
The PHA resin in the blend resin is the abbreviation for Poly Hydroxyl Alkanoate and a generic term for hydroxy acid polyesters with various carbon side chains.
The PHA resin is produced by the polymerization of D(-)-3-hydroxy fatty acid CoA by the polymerization of the polymerase in the granulosa. However, there has been recently found PHA, which is the polymer of hydroxy acid having side chains of various lengths or is its copolymer with 3-hydroxybutyric acid in certain kinds of germs.
If the PLA resin is mixed with the PHA resin, the resin layer is applied with flexibility, improving the touch of the wallpaper surface.
The PLA resin and PHA resin can be mixed together at a weight ratio of 90:10 ~ 10:90 in the blend resin.
It is preferable to mix the PLA resin and PHA resin at a weight ratio of 80:20 ~ 40:60 and more preferably at a weight ratio of 70:30 ~ 50:50.
By mixing the PHA resin as above, it is possible to reduce the content of the plasticizer, thereby preventing the softening of the resin layer 200 due to the high volume addition of the plasticizer.
The inorganic filler to be added to the blend resin can be added in amount of 50~200 parts by weight, preferably 70~180 parts by weight, and more preferably 100~150 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
As for the inorganic filler, any one or more selected from a group consisting of calcium carbonate, quick-lime, potassium bicarbonate, talc and silica can be used. It is preferable to use calcium carbonate having relatively low costs.
The plasticizer to be added to the blend resin can be added in amount of 5 ~ 100 parts by weight and preferably 20 ~ 60 wparts by weight based on 100 parts by weight of the PLA and PHA blend resin.
As for the plasticizer, it is possible to use non-phthalate plasticizer.
The non-phthalate plasticizer flexibilizes the PLA resin so as to maximize thermoplasticity, thereby facilitating the molding processing at appropriate temperature. It is preferable in the present invention to use Acetyl Tributyl Citrate (ATBC), which is an environment-friendly plasticizer, as a non-phthalate plasticizer, but not limited thereto.
The processing aid to be added to the blend resin can be added in amount of 1 ~ 20 parts by weight ad preferably 5 ~ 15 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
As for the processing aid, it is possible to use acrylic copolymer.
The acrylic copolymer serves to secure machinability by reinforcing the melt strength of the PLA resin.
Even though the weight average molecular weight Mw of the acrylic copolymer is not particularly limited, it is preferably to use the acrylic copolymer having the weight average molecular weight Mw in the range of 1,000,000 ~ 6,000,000 and preferably 2,000,000 ~ 5,000,000 in consideration of the improvement of the melt strength and the compatibility with other materials at the time of processing.
The pigment to be added to the blend resin can be added in amount of 5 ~ 30 parts by weight and preferably 10 ~ 20 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
As for the pigment, it is possible to inject titanium dioxide TiO2soastoapplyashieldingfunctiontothewallpaper,therebypreventingbasepatternsfrombeingexposedtothesurface.
The lubricant to be added to the blend resin can be added in amount of 0.1 ~ 10 parts by weight and preferably 0.5 ~ 5 parts by weight based on 100 parts by weight of the PLA and PHA blend resin.
The lubricant prevents the resin from being stuck to processing facilities in the process of processing the resin layer 200.
There are various kinds of lubricant and an environment-friendly higher fatty acid is used in the present invention. More specifically, it is possible to use stearic acid which is a saturated higher fatty acid having carbon number 18 but not limited thereto.
Further, an anti-hydrolysis agent can be further added as another additive to the blend resin.
Meanwhile, the thickness of the resin layer 200 formed in the above composition is set according to the use for applying the wallpaper but not particularly limited. Normally, the resin layer 200 has a thickness of 0.1mm to 0.2mm.
The printed layer 300 can be additionally provided to the resin layer 200.
The printed layer 300 applies various patterns and/or color to the wallpaper, thereby improving the appearance.
A method for forming the printed layer 300 is not particularly limited and may include a well-known printing method, for example, Gravure Printing, transfer printing, digital printing, rotary screen printing and the like.
It is preferable to directly carry out multi-colored gravure printing among the above printing methods on the resin layer 200.
Meanwhile, selectively an embossed pattern layer (not shown) can be additionally provided on the resin layer 200 and/or printed layer 300.
The embossed pattern layer can additionally apply three-dimensional effects to the wallpaper.
A method for forming the embossed pattern layer is not particularly limited and, for example, the embossed pattern layer can be formed by carrying out rolling with a roller provided with patterns with respect to the resin layer 200 or printed layer 300, or by making the resin layer 200 including appropriate foaming agent and the like and carrying out well-known foaming and gelling process and the like with respect to the resin layer 200.
The method for manufacturing wall paper according to the present invention described as above, comprises the steps of: preparing a compound by adding a PLA and PHA blend resin, an inorganic filler, a plasticizer and additives in a kneader mixer or a banbury mixer; forming a resin layer with the compound through a calendaring method; and joining the resin layer to a base sheet.
At this time, the PLA resin and PHA resin can be mixed together at a weight ratio of 90:10 ~ 10:90 in the blend resin.
The PLA resin and PHA resin are preferably mixed at a weight ratio of 80:20 ~ 40:60 and more preferably at a weight ratio of 70:30 ~ 50:50.
In addition, the resin layer 200 may further include an inorganic filler, a plasticizer, and additives such as a processing aid, a pigment, a lubricant and the like.
More specifically, a compound is prepared by adding 50 ~ 200 parts by weight of an inorganic filler, 5 ~ 100 parts by weight of a plasticizer, 1 ~ 20 parts by weight of a processing aid, 5 ~ 30 parts by weight of a pigment and 0.1 ~ 10 parts by weight of a lubricant based on 100 parts by weight of the blend resin, in which the PLA resin and the PHA resin are mixed by stirred in a banbury mixer or kneader mixer.
At this time, the compound mixed with the additives is subject to heating at a temperature of 100 ~ 200℃ and more preferably 130 ~ 170℃ so as to be gelled.
Next, the compound is additionally mixed through a mixing roll and a warming roll, and then passes through a calendar roller so as to form the resin layer 200.
The temperature of the mixing roll and the warming roll is maintained in the range of 80 ~ 160℃ and preferably in the range of 100 ~ 140℃, and the temperature of the calendar roll is preferably maintained in the range of 100~160℃.
Next, the resin layer 200 and the base sheet 100 are joined using a compression roll so as to finish a semi-product of the wallpaper.
In addition, a printed layer 300 is formed by printing various patterns, designs and the like on the resin layer 200 of the wallpaper semi-product, wherein the method for forming the printing layer 300 is not particularly limited but may include a well-known printing method such as Gravure Printing, transfer printing, digital printing, rotary screen printing and the like.
The printing can be carried out immediately after the step of forming the resin layer 200 described above and can also be carried out after the foaming step of the resin layer 200 or the step of forming the embossed pattern layer.
The embossed pattern layer forming method is not particularly limited and, as for the method, a well-known method of compressing the resin layer 200 with an embossing roll having embossing patterns can be used.
<Embodiment>
Based on 100 parts by weight of the blend resin in which the PLA resin and the PHA resin are mixed at a mixing ratio of 65:35 by stirring in a banbury mixer banbury mixer of 130℃, 150 parts by weight of the inorganic filler, 40 parts by weight of the plasticizer, 10 parts by weight of the processing aid, 10 parts by weight of the pigment and 2 parts by weight of a lubricant are added to the blend resin and then the resin is maintained at a temperature in the range of 130~150 ℃ for 10~30 minutes for the gelation of the mixture. The gelled mixture is additionally mixed while being passed through the mixing roll and the warming roll at the temperature of 100 ~ 140℃ in sequence and then a resin layer 200 is formed by finally passing the gelled mixture through the calendar roller.
The resin layer 200 is joined to the base sheet 100 by using the compression roll, thereby producing a wallpaper semi-product.
In addition, various patterns and designs are printed on the resin layer 200 of the wallpaper semi-product by the gravure printing method, thereby forming a printed layer 300. After that, an embossed pattern layer is formed by the well-known method of compressing using an embossing roll on the resin layer 200 of the wallpaper semi-product, thereby applying three-dimensional effects to the surface of the wallpaper. After that, the wallpaper is finished through cutting and packing steps.
<Comparison Example>
Based on 100 parts by weight of the blend resin in which the PLA resin and the PHA resin are mixed at a mixing ratio of 65:35 by stirring in a kneader mixer of 130℃, the additives such as 150 parts by weight of an inorganic filler, 40 parts by weight of a plasticizer, 10 parts by weight of a processing aid, 10 parts by weight of a pigment and 2 parts by weight of a lubricant are added to the blend resin and then the resin is maintained at a temperature in the range of 130~150 ℃ for 10~30 minutes for the gelation of the mixture. The gelled mixture is stored in a hopper maintained at a temperature in the range of 100~130℃. The stored compound is processed in the shape of pellets through a single screw extruder. The temperatures of the cylinder and the die of the extruder are respectively maintained at 100℃ and 130℃. A wallpaper semi-product is produced by topping the compound on the wallpaper base material by the single extruder provided with a T-die, wherein the temperature of the cylinder of the extruder is maintained in the range of 100~140℃ and the temperature of the T-die is maintained in the range of 130~165℃.
In addition, the printing and the embossing can be carried out in the same manners as the embodiment such that wallpaper having various printed and embossed patterns applied on the surface thereof can be manufactured.
The comparison example has disadvantages that the procedure is more complicated in comparison with that of the embodiment example. In addition, the melt viscosity of the compound becomes high such that the uniform topping of the compound becomes difficult if the temperature of the T-die is low, while the compound is likely to be decomposed such that the basic properties as the wallpaper becomes lost if the temperature is too high.
The wallpaper using the PLA and PHA blend resin and a method for manufacturing the same, according to the present invention, are not limited to the embodiments described hereinabove but can be implemented through various modification and changes applied within the range of the technical idea of the invention.

Claims (11)

  1. A wallpaper using a PLA and PHA blend resin, comprising:
    a base sheet: and
    a resin layer including a poly lactic acid (PLA) and poly hydroxyl alkanoate (PHA) blend resin and joined on the base sheet.
  2. The wallpaper using a PLA and PHA blend resin according to claim 1, wherein the weight ratio of the PLA resin to PHA resin in the resin layer is 90:10 ~ 10:90.
  3. The wallpaper using a PLA and PHA blend resin according to claim 2, wherein the resin layer further includes 50 ~ 200 parts by weight of an inorganic filler, 5 ~ 100 parts by weight of a plasticizer, 1 ~ 20 parts by weight of a processing aid, 5 ~ 30 parts by weight of a pigment, and 0.1 ~ 10 parts by weight of a lubricant based on 100 parts by weight of the blend resin.
  4. The wallpaper using a PLA and PHA blend resin according to claim 3, wherein the processing aid is to be an acrylic copolymer.
  5. The wallpaper using a PLA and PHA blend resin according to claim 1, further comprising an embossed pattern layer formed on the resin layer.
  6. The wallpaper using a PLA and PHA blend resin according to claim 1, further comprising a printed layer formed on the resin layer.
  7. A method for manufacturing a wallpaper using a PLA and PHA blend resin, comprising the steps of:
    preparing a compound by adding a PLA and PHA blend resin, an inorganic filler, a plasticizer and additives in a kneader mixer or a banbury mixer;
    forming a resin layer by passing the compound through a calendar roller after warming the compound; and
    joining the resin layer to a base sheet.
  8. The method for manufacturing a wallpaper using a PLA and PHA blend resin according to claim 7, wherein the weight ratio of the PLA resin to PHA resin in the resin layer is 90:10 ~ 10:90.
  9. The method for manufacturing a wallpaper using a PLA and PHA blend resin according to claim 7, wherein the compound of the resin layer includes 50 ~ 200 parts by weight of an inorganic filler, 5 ~ 100 parts by weight of a plasticizer, 1 ~ 20 parts by weight of a processing aid, 5 ~ 30 parts by weight of a pigment, and 0.1 ~ 10 parts by weight of a lubricant based on 100 parts by weight of the blend resin.
  10. The method for manufacturing a wallpaper using a PLA and PHA blend resin according to claim 7, further includes the step of forming a printed layer on the resin layer by printing patterns and designs on the resin layer after joining the resin layer to the base sheet.
  11. The method for manufacturing a wallpaper using a PLA and PHA blend resin according to claim 7, further comprising the step of forming an embossed pattern layer by forming embossed patterns on the resin layer after joining the resin layer to the base sheet.
PCT/KR2015/004521 2014-05-08 2015-05-07 Wallpaper using pla and pha blend resin and method for manufacturing the same Ceased WO2015170875A1 (en)

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WO2024028911A1 (en) * 2022-08-01 2024-02-08 Zambaiti Parati S.P.A. Process for producing ecological and biocompatible wallpaper based on pla, and corresponding wallpaper produced by this process and plant for the production of wallpaper from ecological and biocompatible material
CN116641241A (en) * 2023-04-28 2023-08-25 北京微构工场生物技术有限公司 A kind of artificial leather and preparation method thereof

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JP6284108B2 (en) 2018-02-28
EP3047069A4 (en) 2017-05-03

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