ES2582936T3 - Tela espaciadora no tejida - Google Patents

Tela espaciadora no tejida Download PDF

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Publication number
ES2582936T3
ES2582936T3 ES04743342.0T ES04743342T ES2582936T3 ES 2582936 T3 ES2582936 T3 ES 2582936T3 ES 04743342 T ES04743342 T ES 04743342T ES 2582936 T3 ES2582936 T3 ES 2582936T3
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ES
Spain
Prior art keywords
fabric
spacer fabric
layers
woven spacer
woven
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.)
Expired - Lifetime
Application number
ES04743342.0T
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English (en)
Inventor
Stephen J. Russell
Ali Pourmohammadi
Ningtao Mao
Idris A. Ahmed
Manoj K. Rathod
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.)
Nonwovens Innovation and Research Institute Ltd
Original Assignee
Nonwovens Innovation and Research Institute Ltd
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Filing date
Publication date
Priority claimed from GB0316192A external-priority patent/GB0316192D0/en
Priority claimed from GB0318662A external-priority patent/GB0318662D0/en
Application filed by Nonwovens Innovation and Research Institute Ltd filed Critical Nonwovens Innovation and Research Institute Ltd
Application granted granted Critical
Publication of ES2582936T3 publication Critical patent/ES2582936T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
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Abstract

Una tela o tejida que comprende al menos dos capas separadas, pero interconectadas, que tiene huecos discretos entre las capas; comprendiendo ambas capas una matriz de fibras hidroentrelazadas y consolidadas y estando unidas estas capas periódicamente entre sí por grupos de fibras hidroentrelazadas para formar huecos o celdas dentro de una estructura de tela 3D hidroentrelazada integrada.

Description

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interconexiones, en particular en el número de fibras transferidas. Este proceso se puede repetir múltiples veces dependiendo de los requisitos. A continuación, la tela se desliza fuera del sistema espaciador y se seca y se recoge.
La figura 2 muestra una vista en sección transversal esquemática de un ejemplo de una tela espaciadora no tejida 3D formada de acuerdo con la invención en la que la sección transversal contiene alambres.
La figura 3 ilustra una tela espaciadora no tejida 3D formada de acuerdo con la presente invención en la que se forman huecos en forma de canales claros bajo la superficie de la tela usando un dispositivo espaciador que consiste en una matriz de varillas circulares. El intervalo de espaciado es de aproximadamente 1 por cm.
La figura 4 ilustra una tela espaciadora no tejida 3D formada de acuerdo con la presente invención en la que los huecos en forma de canales se llenan de material funcional en este ejemplo se usan alambres.
La figura 5 muestra una imagen ampliada de un hueco en forma de canal a lo largo de la longitud de la tela espaciadora no tejida 3D formada de acuerdo con la presente invención en el entorno del canal. Esta imagen muestra las diferencias en la estructura de la tela (en particular orientación de fibra) entre el área similar a canal (por debajo de la superficie de la sección transversal) y la región adyacente (no conectada) de la tela.
Las figuras 6 a 8 muestran secciones transversales típicas de telas espaciadoras no tejidas 3D producidas de acuerdo con la presente invención. En la figura 6 se muestran tres canales de sección transversal circular a través de la anchura de la tela. La figura 7 ilustra un canal cilíndrico lleno de gel de sílice, polvo, que está diseñado para incrementar las propiedades de aislamiento térmico de la tela no tejida 3D. La figura 8 muestra un hueco en forma de canal con una sección transversal triangular.
La figura 9 muestra una fotografía de un hueco recubierto internamente (PUR) en tela hidroentrelazada.
La figura 10 ilustra la variación de la permeabilidad de un hueco de una tela espaciadora hidroentrelazada que permite la administración de agentes activos solubilizados o líquidos a un lado de la tela del hueco interno.
Las figuras 11a y b son fotografías de una tela hidroentrelazada que demuestran las posibles variaciones en la forma y tamaño del hueco.
Ejemplo 1
En los ejemplos particulares de tres aplicaciones se identifican a) aislamiento térmico ligero, b) se toallita con administración de detergente incorporado y c) núcleos de pañales superabsorbentes. Se preparó el producto de aislamiento ligero usando una tela espaciadora no tejida 3D típica producida de acuerdo con la presente invención en la que los huecos se llenan con un material denominado gel de sílice in situ a medida que se formaba la tela. Se midieron las características de aislamiento térmico de la tela y se compararon con una tela entramada convencional y los resultados se dan en la tabla 3. Los resultados mostraron mejor aislamiento térmico para las telas espaciadoras no tejidas 3D que contienen el polvo en los huecos en forma de canal en comparación con la tela entramada convencional.
Se produjo una toallita de administración de detergente usando una tela espaciadora no tejida 3D de acuerdo con la presente invención, que se llenó bombeando un agente de limpieza líquido en los huecos en forma de canales internos durante la fabricación de la tela. La superficie de los huecos en forma de canales puede estar diseñada de tal manera que el fluido de limpieza se puede administrar preferentemente a la superficie de limpieza de manera controlada arreglando la tela para que tenga una permeabilidad diferencial, lo que mejora el rendimiento funcional de la toallita.
La tela no tejida de acuerdo con la presente invención también se puede usar para producir una compresa superabsorbente adecuada para su uso como un componente del pañal insertando polvo superabsorbente en los huecos en forma de canales durante la fabricación. La capacidad de absorción de líquido de una tela espaciadora no tejida 3D típica de acuerdo con la presente invención con una tela entramada convencional se compara y se informa en la tabla 3.
El peso de base de las telas no tejidas producidas de acuerdo con la invención variará ampliamente dependiendo del uso previsto. Por ejemplo, se pueden fabricar telas muy ligeras en el intervalo de 40 g/m2 a 80 g/m2 para productos de cuidado personal. Los pesos de base más pesados en el intervalo de 50-100 g/m2 servirán para aplicaciones tales como toallitas y productos de limpieza. Productos todavía más pesados en el intervalo de 100-300 g/m2 pueden ser útiles para aplicaciones que incluyen aislamiento acústico y térmico.
Las velocidades de producción están en el intervalo de 0,1 m/min-60 m/min.
Ejemplo 2
Usando un aparato readaptado ilustrado esquemáticamente en la figura 2, se produjo una tela espaciadora no tejida 3D usando dos capas cardadas plegadas de forma cruzada de fibra de viscosa de 1,7 dtex de finura y 40 mm de longitud. Se usó un dispositivo espaciador sencillo que consistía en una matriz de varillas lisas y se formaron huecos
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Claims (1)

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ES04743342.0T 2003-07-11 2004-07-09 Tela espaciadora no tejida Expired - Lifetime ES2582936T3 (es)

Applications Claiming Priority (5)

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GB0316192A GB0316192D0 (en) 2003-07-11 2003-07-11 Hydro link spacer fabrics
GB0316192 2003-07-11
GB0318662 2003-08-08
GB0318662A GB0318662D0 (en) 2003-08-08 2003-08-08 Nonwoven spacer fabric
PCT/GB2004/003001 WO2005007962A1 (en) 2003-07-11 2004-07-09 Nonwoven spacer fabric

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US20100201020A1 (en) 2010-08-12
US7718249B2 (en) 2010-05-18

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