Abstract: The cushion material according to the invention is prepared by mixing(A) polyester fibers having a fineness of 4 to 30 denier and a cut length of 25 to 150 mm with(B) core-sheath type conjugated fibers having a fineness of 2 to 20 denier and a cut length of 25 to 76 mm in a weight ratio of 95.about.40:5.about.60, the sheath component of said conjugated fibers having a melting point lower than that of the core component of said conjugated fibers and said polyester fibers with a difference of 30.degree. C. or more. In the cushion material, cubically and continuously interconnected portions of the fibers are adhered by fusion of the sheath portion of the above core-sheath type conjugated fibers.The cushion material having a thickness of 10 cm or more and a good quality can be stably prepared by combining far-infrared ray or hot air flow heating and steaming in the heat-treatment.

Abstract: There is disclosed a process for producing an amorphous aluminosilicate having the formula:2Na.sub.x O.Al.sub.2 O.sub.3.ySiO.sub.2(wherein x is a number between 0.6 and 1.8 inclusive; and y is a number between 1.3 and 7 inclusive); which comprises:a step of maintaining an alkali solution (Solution-C), the alkalinity of which is within the range of 1.2-3.5N under stirring;a step of adding a sodium aluminate solution (Solution-A) containing free alkali and sodium silicate solution or colloidal silica solution (Solution-B) containing free alkali to the Solution-C, separately to prepare a slurry which contains an amorphous sodium aluminosilicate in the form of finely divided particles which are only slightly soluble in water; anda step of aging the slurry, characterized in that the addition of Solution-A and Solution-B into Solution-C is carried out so that the Si/Al ratio in the resultant mixture is kept within the range of 0.7 to 7.6 during and after the addition, and mixing effected at 55.degree. C.

Abstract: Zeolite particles retaining at least one metal ion having bacteriostatic properties on their ion-exchangeable sites in an amount up to 41% of the zeolite's ion exchange capacity are described.

Abstract: Zeolite particles retaining silver ions having bacteriostatic properties on their ion-exchangeable sites in an amount up to 41% of the zeolite's exchange capacity are described.

Abstract: A polymer article containing zeolite particles on which metal ion having a bactericidal property, e.g. Ag, Cu or Zn, is provided by an ion exchange reaction shows an excellent bactericidal effect and durability of the effect, but no deterioration of physical properties of the polymer.The polymer article is produced by admixing zeolite particles previously provided with the metal ion with a polymer or by moulding a zeolite-containing polymer into an article and then treating the article with a metal ion solution.

Abstract: Specific zeolite particles retaining therein a metal ion having a bactericidal activity are packed and retained in a mixed fiber assembly composed of low-melting thermoplastic synthetic fibers and ordinary fibers. The zeolite particles are retained by welding of the low-temperature thermoplastic synthetic fibers but in a state of allowing the contact thereof with an external fluid. The particle-packed fiber article has an excellent and durable antibacterial activity and can be used in various fields.