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
  • D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D27/00—Details of garments or of their making
  • A41D27/02—Linings
  • A41D27/06—Stiffening-pieces
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
  • Y10T428/2809—Web or sheet containing structurally defined element or component and having an adhesive outermost layer including irradiated or wave energy treated component
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
  • Y10T428/2813—Heat or solvent activated or sealable
  • Y10T428/2817—Heat sealable
  • Y10T428/2826—Synthetic resin or polymer
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
  • Y10T428/2852—Adhesive compositions
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2738—Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith
  • Y10T442/2746—Heat-activatable adhesive

Definitions

• the invention relates to fusible textile products. These are products comprising a textile support on which a layer of fusible polymers is applied.
• these products must be able to be stored after the textile support has received the layer of polymers and they are intended by the effect of the variation of an external parameter, particularly of the temperature, to become sticky, thus allowing their adhesion. on another fabric.
• Iron-on products are now commonly used in the textile industry, for example as reinforcement fabrics, their application to linings or draperies making it possible to modify the characteristics of the fabrics improving their hold and their nervousness.
• the textile supports used are very varied. They can be woven, knitted or non-woven.
• thermoadhesive layer there are many methods of applying the thermoadhesive layer to its support. For many uses, an application by points allowing to preserve a great flexibility to the fabrics is preferred whereas for other uses, a continuous layer of adhesive better achieves the desired properties.
• the textile support is coated with the fusible substance.
• this coating is most often a coating by points carried out using an engraved cylinder.
• the fusible polymers initially in the form of powder or paste are brought to a temperature which allows them to enter into fusion and to adhere to the support.
• the coating is carried out by transfer, that is to say that the fusible polymers are deposited in the form of dots by an engraving cylinder on a carpet treated to be non-adhesive; these points are then transferred to a lower temperature on the textile support.
• the fusible textile product thus obtained is then stored at ambient temperature. It is therefore necessary that the different layers of this product, in contact, do not adhere to each other. That is to say that the fusible textile product must not have a "tack”. It is therefore necessary that in the vicinity of room temperature, the textile product used is not sticky, that is to say does not exhibit immediate adhesion.
• the fusible textile product is then used by the clothing manufacturers who apply it against other fabrics, draperies or linings, and thus bond the reinforcement fabric to the drapery using a press at pressures of a few decibars. at a few bars for relatively short times of the order of 10 to 30 seconds and at temperatures generally above 100 ° C.
• the polymers of the fusible textile product must regain their adhesion property. However, they must not have too low a viscosity for a too long time during this operation because otherwise the polymers pass through the textile support or the drapery itself causing the returns to the bushings which make the products obtained unattractive and often unusable.
• the finished garments and therefore in particular the draperies or linings provided with reinforcing fabric must withstand the different modes of use, washing, ironing ...
• the bonding carried out in the previous step must therefore withstand difficult atmospheres .
• transfer The process for depositing the fusible material on the textile substrate, referred to as transfer, mentioned above, makes it possible to avoid excessive penetration of the sticky material into the textile substrate.
• the object of the present invention is a process for manufacturing a heat-bonding textile product and the resulting product, this product being usable in particular as a reinforcing fabric.
• This reinforcing fabric must be able to be laminated easily, without return or crossing and it must be particularly resistant to agents and processes for cleaning clothes and ironing.
• the process for manufacturing a fusible product according to the invention is of the type in which a thermoadhesive layer is applied to a textile support, said layer comprising polymers having a reactive and / or reactivable function intended to allow adhesion of the product for example on a drapery or lining.
• thermoadhesive layer comprises a first reactive and / or reactivable function which is activated during the application of the thermoadhesive layer to the textile support.
• thermoadhesive layer comprises crosslinkable polymers initially comprising at least two reactive and / or reactivable functions, the first of these functions having been activated during the deposition of the thermoadhesive layer on the support.
• first of the functions can be activated under conditions which do not influence the second function and in particular do not activate it. It is thus possible to crosslink this adhesive in two separate steps and at different times freely determined. It can also be a unique chemical function, partially activated due to the relative dosage of the crosslinking agent used in the first step.
• activation conditions can be the conditions of humidity, temperature, ambient pressure, can also be any other value of these parameters, the action of electromagnetic radiation such as ultraviolet, high frequency radiation, the action of chemical agents. , electronic bombardment or any combination of these parameters.
• the essential condition to be observed is that by applying this environment, the second reactive function is maintained in its initial state.
• This second reactive function can then be activated in a similar manner to the activation of the first function under conditions whose influence on the first function is of course not important, since this first function has already been activated.
• thermoadhesive layer comprising polymers having these two distinct reactive and / or reactivable functions is called bireactive thermoadhesive layer.
• thermoadhesive which composes it can either comprise a mixture of at least two polymers each of which comprises one of the reactive functions, it can also comprise a single polymer whose chain comprises at least two types of function reacting under different conditions according to the modalities described above.
• the process for manufacturing the fusible product according to the invention comprises a first phase in which the thermoadhesive layer is applied to a textile support. It is applicable to any type of textile support (woven, knitted, non-woven ).
• This application can be carried out by numerous means known to those skilled in the art, by coating (rotary or flat frame), by spraying, by dusting.
• This application may consist either of a continuous layer or preferably of a distribution by points. This geometric distribution being calibrated in a conventional manner and known per se.
• the first reactive and / or reactivable function of the fusible layer is activated.
• thermoadhesive a two-component fusible in which a crosslinking agent is incorporated into the thermoadhesive before its application.
• This crosslinking agent then causes for example under the usual conditions of application (temperature, pressure, humidity) polymerization by activation of the first function.
• the activation of the first function can also be obtained in the case of a two-component system as in the case of a single-component by a rise in temperature, pressure or even ultraviolet or high frequency radiation during or after application. .
• the product under ordinary storage conditions shows no "tack", that is to say that the different layers of fusible product in contact with each other do not adhere.
• the fusible product obtained by this process can then be applied to another textile product, lining, interlining or drapery, by applying suitable physical conditions (temperature, pressure, ...) it is made less viscous which allows the realization of membership.
• suitable physical conditions temperature, pressure, ...) it is made less viscous which allows the realization of membership.
• the second reactive and / or reactivable function is then activated realizing the crosslinking of the fusible and ensuring its stability.
• crosslinking agent is understood to mean either a crosslinking agent of which certain functions participate in the final product, or in a catalyst, that is to say a compound which will be found entirely in its initial state at the end. of the reaction.
• the first reactive function can be reactivated by the action of an unblocked crosslinking agent with which the fusible polymer is brought into contact before application to the textile support.
• the second reactive function on the contrary, can be reactivated by a blocked crosslinking agent which will be activated during the application of the fusible product to the lining, interlining or drapery at the user. This activation can be obtained by varying the temperature pressure parameters, by the effect of electromagnetic radiation such as ultraviolet, high frequency or by the effect of an external chemical agent or by any combination of these actions.
• the first reactive function is initially also blocked. It can be activated during the application of the polymers to their textile support by the effect of a variation in pressure, in temperature or also by the effect of ultraviolet radiation or high frequency radiation or by any combination of these parameters. In order to ensure activation conditions that are different from the second function, it will be activated when laminating the fusible product, for example on a lining or drapery by the variation or by the effect of a parameter different from that having activated the first function or by varying the same parameter or the same combination of these parameters at a different level.
• the polymers of the thermoadhesive layer applied to the textile support for the production of the fusible product naturally include other elements than the only chemical crosslinking functions mentioned above. They include in particular polymer chains whose nature and functionality are involved in determining the viscosity and the adhesion of the fusible in combination with the crosslinkable polymers mentioned above.
• the adhesive layer can also include neutral fillers, stabilizers, dyes, etc.
• the fusible layer is a two-component system comprising a resin and a hardener.
• the resin contains polyols and / or epoxies as well as blocked isocyanates.
• the hardener contains unblocked isocyanates which mixed with the resin causes a first crosslinking giving a first polyurethane system.
• the second crosslinking is generated during the unlocking of the blocked isocyanate which by acting on the alcohol functions remaining free then gives rise to a second polyurethane system.
• the release temperature depends on the blocking agent. This can be composed of oximes, oxamates, diketones, caprolacatams, triasoles, imidazolines, phenols ...
• one-component or two-component epoxy resins crosslink at room temperature or by the effect of temperature.
• Mixtures based on acrylics are photocrosslinkable, others are sensitive to heat.
• Mixtures based on unsaturated polyesthers are also photocrosslinkable or thermocrosslinkable.
• Encapsulated aziridnes allow the crosslinking of polyamides.
• thermoadhesive products Before their application on the support, these thermoadhesive products are present in the form of more or less viscous powders or pastes.
• thermoadhesive layer comprises a resin, free isocyanates and blocked isocyanates.
• the resin contains hydroxylated polybutadiene and a diol acting as a chain activator.
• the free isocyanate is IPDI (3.isocyanatomethyl - 3,5,5 - trimethylcyclohesyl isocyanate).
• a first baking is carried out at 60 ° C. allowing the activation of the first reactive function.
• the free isocyanate reacts with the resin to give a polyurethane network which is slightly crosslinked and dry at room temperature.
• a second baking at 140 ° C (1/2 hour) refluidifies the glue which allows adhesion to the drapery at the same time as the isocyanate blocked with paranitrophenol is released to react with the remaining hydroxyl functions.
• a highly crosslinked polyurethane network is then obtained.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Details Of Garments (AREA)
• Manufacturing Of Multi-Layer Textile Fabrics (AREA)
• Adhesive Tapes (AREA)
• Treatment Of Fiber Materials (AREA)
• Nonwoven Fabrics (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=9370484

Family Applications (1)

Country Status (6)

Cited By (6)

Families Citing this family (3)

Citations (4)

Family Cites Families (7)

• 1988
  • 1988-09-28 FR FR8812673A patent/FR2636986B1/fr not_active Expired - Lifetime
• 1989
  • 1989-09-27 AT AT89402653T patent/ATE180294T1/de not_active IP Right Cessation
  • 1989-09-27 DE DE68928997T patent/DE68928997D1/de not_active Expired - Lifetime
  • 1989-09-27 EP EP19890402653 patent/EP0362059B1/de not_active Expired - Lifetime
  • 1989-09-28 JP JP25081789A patent/JP2810147B2/ja not_active Expired - Lifetime
• 1994
  • 1994-04-04 US US08/222,338 patent/US5401565A/en not_active Expired - Fee Related

Patent Citations (4)

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