LAMINATE NONWOVEN FABRIC

• Main Authors: UMAMURA TAKUTO, SHOJI YOSHIRO, KAWASAKI KAZUMASA, FUKAZAWA HIROKI
• Format: Patent
• Language: English; Japanese
• Published: 16.06.2022
• Subjects: BRAIDING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; COTTON-WOOL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; HUMAN NECESSITIES; HYGIENE; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; NON-WOVEN FABRICS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; TEXTILES; TRIMMINGS; WADDING

To provide a laminate nonwoven fabric having excellent quality by preventing the fabric from having conspicuous color unevenness.SOLUTION: A laminate nonwoven fabric is composed by laminating a first fiber layer including fiber containing coloring matter and a second fiber layer having a fiber composition different from that of the first fiber layer. It has been found that whether or not the laminate nonwoven fabric has conspicuous color unevenness is influenced by basis weight of the first fiber layer composing the laminate nonwoven fabric. Then, it has been founded that the laminate nonwoven fabric having excellent quality can be provided by preventing generation of color unevenness when the basis weight of the first fiber layer is more than 16 g/m2. Furthermore, it has been found that the laminate nonwoven fabric having more excellent quality can be provided by effectively preventing generation of color unevenness when the first fiber layer has at least a bidirectional fiber orientation or when the first fiber layer does not have a specific fiber orientation.SELECTED DRAWING: None 【課題】目立つ色ムラを有することを防止して、品位に優れた積層体不織布の提供を目的とする。【解決手段】色素を含有する繊維を含む第一繊維層と、前記第一繊維層と異なる繊維組成を有する第二繊維層とが積層している積層体不織布において、積層体不織布が目立つ色ムラを有するか否かは、積層体不織布を構成している第一繊維層の目付によって左右されることを見出した。そして、当該第一繊維層の目付が１６ｇ／ｍ２よりも多い場合には、色ムラの発生を防止して、品位に優れた積層体不織布を提供できることを見出した。更に、当該第一繊維層が少なくとも二方向性の繊維配向を有している、あるいは、当該第一繊維層が特定の繊維配向を有していない場合には、効果的に色ムラの発生を防止して、より品位に優れた積層体不織布を提供できることを見出した。【選択図】なし