US20200385893A1 - Recyclable quilt - Google Patents

Recyclable quilt Download PDF

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Publication number
US20200385893A1
US20200385893A1 US16/767,443 US201816767443A US2020385893A1 US 20200385893 A1 US20200385893 A1 US 20200385893A1 US 201816767443 A US201816767443 A US 201816767443A US 2020385893 A1 US2020385893 A1 US 2020385893A1
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US
United States
Prior art keywords
sewing thread
heat
stitching
temperature
softening
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.)
Abandoned
Application number
US16/767,443
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English (en)
Inventor
Roberto TROVI
Franco DOLFIN
Antonio CASO
Piero TONINI
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20200385893A1 publication Critical patent/US20200385893A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A47G9/0207—Blankets; Duvets
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G11/00—Disintegrating fibre-containing articles to obtain fibres for re-use
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0255—Specific separating techniques using different melting or softening temperatures of the materials to be separated
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2503/00—Domestic or personal
    • D10B2503/06—Bed linen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use

Definitions

  • the invention relates to the field of quilts.
  • the invention relates to a recyclable quilt, a machine and a relative method for recycling quilts and a sewing thread for recyclable quilts.
  • the quilting of textile products is a production process carried out by linking together textile structures, by means of suitably positioned and spaced stitches, which often also comprise support or padding materials.
  • the quilting allows multilayer or padded textile products to be made which are embellished with the selection of textures and patterns defined by the switching on the outer layers.
  • the aim of the invention is to provide a recyclable quilt, a machine and a method for recycling quilts and a sewing thread for recyclable quilts which is able to reduce the work load, the complexity and economic cost of the existing methods for recycling quilts.
  • a further aim of this invention is to provide a recyclable quilt, a machine and a relative method for recycling quilts and a sewing thread for recyclable quilts which is able to reduce the environmental impact of the production of quilts and encourage their recycling.
  • FIG. 1 shows a view partly in cross-section of a recyclable quilt made in accordance with the invention
  • FIG. 2A shows a cross-section view of a detail of the recyclable quilt of FIG. 1 ;
  • FIG. 2B shows a cross-section view of the detail of FIG. 2A made according to an alternative embodiment in accordance with the invention
  • FIG. 2C shows a cross-section view of the detail of FIG. 2A made according to a further alternative embodiment in accordance with the invention
  • FIG. 4 shows a cross-section view of the detail of FIG. 2B , in accordance with an operating step of a method for recycling quilts, according to the invention
  • FIG. 5 shows a schematic representation of a machine for recycling quilts in accordance with the invention.
  • the quilt 1 comprises an upper layer 10 and a lower layer 20 , preferably made of fabrics for furnishing and bedding items such as, for example, cotton, linen, silk, wool, synthetic fibres or a combination of these.
  • both the upper layer 10 and the lower layer 20 may be formed by a single piece of fabric or comprise a plurality of pieces of fabric sewn together.
  • They may also consist of non-woven fabrics, for example spunbonded, or equivalent materials such as leather, faux leather and leatherette.
  • the materials for the padding 30 are selected for quality and quantity as a function of the degree of thermal insulation desired and the range of price and comfort of the quilt 1 .
  • the upper layer 10 and lower layer 20 located on respective opposite sides of the padding 30 , are joined by means of a stitching 40 , which constrains the above-mentioned layers along predetermined lines and is made by a plurality of stitches, distributed along the above-mentioned predetermined lines.
  • the stitching 40 is configured in such a way as to enclose the padding 30 between the two upper 10 and lower 20 layers by means a variable force according to the desired properties of softness, weight and elasticity and the type of padding 30 used.
  • the stitches 40 are sewn in such a way that a softening or a change of state of the heat-sensitive sewing thread 42 causes the break up of the stitching 40 .
  • the expression temperature of change of state or softening is used to mean a temperature at which the tensile strength characteristics of the heat-sensitive sewing thread 42 decline by at least an order of magnitude, due for example to a melting or total or partial sublimation of it.
  • the heat-sensitive sewing thread 42 is made from non-inflammable materials, at least at temperatures equal to, lower than or close to the above-mentioned temperature of change of state or softening.
  • the degradation temperature means the temperature at which the relative component of the quilt 1 undergoes an appreciable variation of the relative physical and/or aesthetic characteristics.
  • the heat-sensitive sewing thread 42 is produced with fibres with a low melting point, preferably having a temperature of change of state or softening of between 50° C. and 200° C., even more preferably between 70° C. and 140° C., for example co-polyester, co-polyamide, polypropylene or a combination of these.
  • the lowest of the degradation temperatures between the upper layer 10 , lower layer 20 and padding 30 is greater than the temperature of change of state or softening of the heat-sensitive sewing thread 42 by at least 30° C., even more preferably by at least 100° C.
  • the stitching 40 degrades completely, dispersing into the air, impregnating the upper layer 10 or lower layer 20 , or weakening sufficiently to allow a reciprocal mechanical separation of the upper layer 10 and lower layer 20 without damaging relative portions.
  • the stitches 40 are a single thread, that is to say, belonging to stitch classes 100 or 200 (as identified in the table prepared by the US Federal Specifications Board), in particular, simple chain stitches as per, for example, stitch type 101 , illustrated.
  • the stitch 40 comprises two or more rows of heat-sensitive stitches 42 to define a plurality of multiple thread stitches of classes 300 , 400 , 500 o 600 , wherein each sewing thread is of the heat-sensitive type.
  • the stitching 40 comprises at least one pair of stitching threads, of which at least one heat-sensitive sewing thread 42 , preferably only one, and at least one conventional sewing thread 44 , wherein the heat-sensitive sewing thread 42 has a temperature of change of state or softening which is less than the temperature of degradation of the conventional sewing thread 44 .
  • the heat-sensitive sewing thread 42 passes partly through at least one between the upper layer 10 , the padding 30 and the lower layer 20 defining, together with the conventional sewing thread 44 , a plurality of multiple thread stitching points.
  • the conventional sewing thread 44 passes completely through the upper layer 10 and the lower layer 20 , whilst the heat-sensitive sewing thread 42 is coupled to it for making a complementary part of the stitching 40 , outside the upper layer 10 and lower layer 20 , to define a plurality of stitches preferably of class 400 , or double chain stitches.
  • a heating of the heat-sensitive sewing thread 42 beyond its softening or change of state temperature allows the stitching 40 to be broken by a pulling of the conventional sewing thread 44 .
  • the. fact of keeping the heat-sensitive sewing thread 42 outside the upper layer 10 and lower layer 20 and the padding 30 prevents or reduces the dispersion of any molten material of the heat-sensitive sewing thread 42 into the recycling material.
  • Another object of the invention is a method for recycling quilts, comprising a step of preparing a recyclable quilt 1 of the type described above and illustrated in FIG. 1 .
  • the method then comprises a step of heating the stitching 40 of the quilt 1 to the temperature of change of state or softening of at least one heat-sensitive sewing thread 42 , of the type described above, preferably between 50° C. and 200° C., even more preferably between 70° C. and 140° C.
  • the step of heating the stitching 40 may be carried out, for example, by means of one or more of the following techniques: jets of steam, irradiation from hot surface, infrared irradiation, exposure to microwaves and forced convection.
  • the method in some embodiments comprises the step of heating only one side of the stitching 40 , at the upper layer 10 or the lower layer 20 .
  • the method according to the invention comprises a step of applying a pulling action on the conventional sewing thread 44 , in such a way to withdraw it after it has been freed by the change of state or softening of the heat-sensitive sewing thread 42 , as illustrated in FIG. 4 .
  • the stitching 40 comprises exclusively one or more heat-sensitive sewing threads 42 .
  • the method according to the invention comprises a step of mechanically separating the upper layer 10 , the lower layer 20 and/or the padding 30 of the quilt 1 so that they can be assigned to recycling separately ( FIG. 3 ).
  • Another object of the invention is a machine 100 for recycling quilts, illustrated schematically in FIG. 5 and applicable to a quilt 1 of the recyclable type described above.
  • the machine 100 comprises a heating station 110 , configured for heating a stitching 40 of a quilt 1 of the type described above, to a temperature of change of state or softening of at least one heat-sensitive sewing thread 42 of the stitching 40 , in the same way as described above for the relative method.
  • the machine 100 comprises a separating station 130 , configured for mutually separating the lower layer 20 , the upper layer 10 and/or the padding 30 of the quilt 1 , after the break up of the stitching 40 .
  • the machine 100 also comprises an unstitching station 120 , wherein pulling means are configured to act on a conventional sewing thread 44 of the stitching 40 for determining a break up, after a heating of the heat-sensitive sewing thread 42 beyond its softening or change of state temperature.
  • Another object of the invention is a heat-sensitive sewing thread 42 suitable for the production of a recyclable quilt 1 of the recyclable type described above, in particular of the stitching 40 .
  • the heat-sensitive sewing thread 42 has a sizing or a lubricating finishing of between 15% or 0.1%, even more preferably between 8% and 2%, in such a way as to reduce the friction coefficient to allow use on sewing machines, embroidery machines and quilting machines also of the high speed multi-needle type, limiting the heating due to friction to prevent its temperature from approaching the above-mentioned change of state or softening temperature, which would result in a risk of breakage of the thread.
  • the invention achieves the set aim by overcoming the drawbacks of the prior art. More specifically, the recyclable quilt described may be separated into its basic components by means of heating the heat-sensitive sewing thread and a physical separation of the parts. Advantageously, this process is considerably easier and faster than the physical cutting of the stitches carried out in the prior art and does not result in any damage to the components of the quilt.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Bedding Items (AREA)
  • Sewing Machines And Sewing (AREA)
US16/767,443 2017-11-29 2018-10-26 Recyclable quilt Abandoned US20200385893A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT102017000137134 2017-11-29
IT201700137134 2017-11-29
PCT/IB2018/058360 WO2019106453A1 (fr) 2017-11-29 2018-10-26 Édredon recyclable

Publications (1)

Publication Number Publication Date
US20200385893A1 true US20200385893A1 (en) 2020-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US16/767,443 Abandoned US20200385893A1 (en) 2017-11-29 2018-10-26 Recyclable quilt

Country Status (3)

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US (1) US20200385893A1 (fr)
EP (1) EP3716818B1 (fr)
WO (1) WO2019106453A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111615B2 (en) 2018-11-30 2021-09-07 L & P Property Management Company Quilted panel
US11015274B2 (en) 2018-11-30 2021-05-25 L&P Property Management Company Quilting machine
US11015275B2 (en) 2018-11-30 2021-05-25 L&P Property Management Company Method of quilting layered input web
BE1029856B1 (nl) 2021-10-14 2023-05-15 Regeneration Bv Oververhitte stoom- en luchtoven voor de ontmanteling van textielproducten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472763A (en) * 1992-11-04 1995-12-05 Hoechst Aktiengesellschaft Recyclable carpet floor covering
US5535945A (en) * 1995-02-27 1996-07-16 Basf Corportion Carpet recycling process and system
US6182913B1 (en) * 1999-01-25 2001-02-06 Interface, Inc. Method and apparatus for reclaiming carpet components
US6398891B1 (en) * 1991-08-30 2002-06-04 Basf Corp Recyclable carpet
US20070023125A1 (en) * 2003-02-03 2007-02-01 Sara Lee Corporation Method for fixing several layers of textile along a line, particularly along the edge of a textile item and item produced thus
US20150167230A1 (en) * 2012-06-18 2015-06-18 Nonwovens Innovation & Research Institute Article assembly disassembly system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7830254U1 (de) * 1978-10-11 1979-02-08 Hammer, Hans-Juergen, 4600 Dortmund Steppdecke
EP0057985A3 (fr) * 1981-02-06 1983-11-16 Rohm And Haas Company Méthode d'encollage durable de fils en polyester et produits textiles tissés avec ces fils
JPH108361A (ja) * 1996-06-18 1998-01-13 Gunze Ltd 低融点ナイロン糸を使用したニット衣服の熱分離方法
US6301730B1 (en) * 1999-12-29 2001-10-16 Pacific Coast Feather Company High loft comforter
KR100960979B1 (ko) * 2009-02-13 2010-06-03 김혜란 다운 주머니, 그를 이용한 다운 제품 및 다운 제품 제조 방법
DE202014010677U1 (de) * 2014-07-22 2016-04-13 Hermann Josef Brinkhaus Set aus einer Bettware und einem Bezug
JP6706895B2 (ja) * 2015-10-05 2020-06-10 西川株式会社 掛け布団の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6398891B1 (en) * 1991-08-30 2002-06-04 Basf Corp Recyclable carpet
US5472763A (en) * 1992-11-04 1995-12-05 Hoechst Aktiengesellschaft Recyclable carpet floor covering
US5535945A (en) * 1995-02-27 1996-07-16 Basf Corportion Carpet recycling process and system
US6182913B1 (en) * 1999-01-25 2001-02-06 Interface, Inc. Method and apparatus for reclaiming carpet components
US20070023125A1 (en) * 2003-02-03 2007-02-01 Sara Lee Corporation Method for fixing several layers of textile along a line, particularly along the edge of a textile item and item produced thus
US20150167230A1 (en) * 2012-06-18 2015-06-18 Nonwovens Innovation & Research Institute Article assembly disassembly system

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Publication number Publication date
EP3716818A1 (fr) 2020-10-07
EP3716818B1 (fr) 2023-06-28
WO2019106453A1 (fr) 2019-06-06

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