发明授权
- 专利标题: TROCKEN-WIRBELBETTVERFAHREN ZUR HERSTELLUNG DÜNNER ABSORBIERENDER FLÄCHENGEBILDE
- 专利标题(英): Method using a dry fluidised bed for producing thin, absorbent surface structures
- 专利标题(中): 干椎床工艺用于生产薄吸收性织物
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申请号: EP02710854.7申请日: 2002-02-15
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公开(公告)号: EP1363680B1公开(公告)日: 2004-10-20
- 发明人: HEIDER, Wolfgang , HOFMANN, Jürgen , WANIOR, Mariola , FUNK, Rüdiger , LICHT, Ulrike , EHLE, Michael
- 申请人: BASF AKTIENGESELLSCHAFT
- 申请人地址: 67056 Ludwigshafen DE
- 专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人地址: 67056 Ludwigshafen DE
- 代理机构: Isenbruck, Günter, Dr.
- 优先权: DE10107667 20010219
- 国际公布: WO2002066088 20020829
- 主分类号: A61L15/58
- IPC分类号: A61L15/58 ; A61L15/60 ; A61F13/15
摘要:
The invention relates to a method for producing thin, absorbent surface structures which can be used in hygiene products such as nappies, incontinence products, dressings or sanitary towels, in order to receive bodily fluids. The inventive method comprises the following steps: A) a mixture is produced from an adhesive in the form of a dispersion and a particle-shaped absorbent by swirling the constituents, B) the mixture of adhesive and absorbent is uniformly applied to the surface of one side of a first flat carrier material, C) one side of a second flat carrier material is applied to the mixture of adhesive and absorbent on the surface of one side of the first flat carrier material, forming a sandwich-type intermediate product, and D) said sandwich-type intermediate product is processed to form the final product, at a temperature of at least 90 °C, a pressure of between 4 and 50 bar and a pressure time of between 0.5 and 5 min. The invention also relates to a device for carrying out step (A) of the method, and hygiene products containing at least one thin, absorbent surface structure produced according to the inventive method.
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