Thermal bonding conjugate fiber with excellent bulkiness and softness, and fiber formed article using the same
AssigneesES FiberVisions LP, ES FiberVisions Hong Kong Limited, ES FiberVisions ApS
InventorsKazuyuki Sakamoto, Tomoaki Suzuki, Hiroshi Kayama
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Abstract
A thermal bonding conjugate fiber constituted from a first component comprising a polyester resin and a second component comprising a polyolefin resin with a melting point lower than that of the polyester resin by not less than 20° C., characterized in that a post-heat treatment bulk retention rate thereof is 20% or more when calculated by the following measurement method: Bulk retention rate=(H1 (mm)/H0 (mm))×100(%) (wherein H0 is the web height when a 0.1 g/cm2 load is applied to a web with a mass per unit area of 200 g/m2; and H1 is the web height after a heat treatment for 5 min at 145° C. when a 0.1 g/cm2 load is applied to that web).
Claims8
A thermal bonding conjugate fiber constituted from a first component comprising a polyester resin and a second component comprising a polyolefin resin with a melting point lower than that of the polyester resin by not less than 20° C., characterized in that a post-heat treatment bulk retention rate thereof is 20% or more when calculated by the following measurement method:
- Bulk retention rate=(H1 (mm)/H0 (mm))×100 (%)
- (wherein H0 is the web height when a 0.1 g/cm2 load is applied to a web with a mass per unit area of 200 g/m2;
- and H1 is the web height after a heat treatment for 5 min at 145° C. when a 0.1 g/cm2 load is applied to the web).
Dependencies are inferred from the claim text.