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    • 5. 发明授权
    • Flexible coated abrasive and fabric therefor
    • 柔性涂层磨料和织物
    • US4725487A
    • 1988-02-16
    • US845897
    • 1986-03-28
    • Raymond E. PemrickDhiraj H. Darjee
    • Raymond E. PemrickDhiraj H. Darjee
    • C08J5/14B24D11/00B24D11/02D04B21/14B05D5/00
    • B24D11/02D04B21/165D10B2403/02412Y10T442/273Y10T442/2738
    • Flexible coated abrasives with facile straight tear in either the length or cross directions can be made on stitch bonded fabric backings having (1) an aral density between 51 and 153 gm/m.sup.2, (2) a tensile strength in the length direction between 5.4 and 12.6 kN/m of width, (3) a tensile strength in the cross direction which is between 5.4 and 11.7 kN/m of length and is between 0.9 and 1.35 times as great as the length direction tensile strength, (4) an elongation to break in the length direction of not more than 40%, and (5) an elongation to break in the cross direction of not more than 35%. The fabric is prepared for coating by saturation with at least its own weight of a finishing adhesive composed primarily of latices of acrylic homopolymers, acrylic copolymers, butadienestyrene polymers, or mixtures of these types. Conventional making, grit coating, and sizing are then performed to yield a coated abrasive with a ratio of length direction tensile modulus to cross direction tensile modulus within the range of 0.8 to 1.8.
    • 可以在具有(1)密度为51和153gm / m 2之间的(1)的长度方向上的拉伸强度在5.4和之间的拉伸强度的缝合粘合织物背衬上制造在长度或横向方向上具有轻柔直线撕裂的柔性涂层磨料 宽度为12.6kN / m,(3)横向拉伸强度为5.4-11.7kN / m,长度方向拉伸强度的0.9〜1.35倍,(4)伸长率 在长度方向上断裂不大于40%,(5)横向断裂伸长率不大于35%。 制备织物至少用自身重量的主要由丙烯酸均聚物,丙烯酸共聚物,丁二烯 - 苯乙烯聚合物或这些类型的混合物的胶乳组成的整理胶粘剂进行饱和涂布。 然后进行常规的制造,粗粒涂布和上浆以得到长度方向拉伸模量与横向拉伸模量的比率在0.8至1.8的范围内的涂覆磨料。
    • 8. 发明授权
    • Stitch-bonded fabrics for reinforcing coated abrasive backings
    • 用于加强涂层磨料背衬的针刺织物
    • US4722203A
    • 1988-02-02
    • US855874
    • 1986-04-24
    • Dhiraj H. Darjee
    • Dhiraj H. Darjee
    • D04B21/14D04H3/10D04B7/16
    • D04H3/10D04B21/165D10B2403/02412D10B2505/02
    • Stitch bonded fabrics were found to be suitable substrates for coated abrasives when the fabric has a strength in the warp direction of at least 30 dekanewtons (daN) per centimeter (cm) of width, a fill yarn cover factor of at least 40%, and stitch yarns with a tensile strength of at least 0.5 daN. For substitution of the established commercial classes of abrasives known as X and Y weights, the fabrics are preferably made on a Malimo machine, with 14-22 warp yarns of 840-1300 denier high tenacity multifilament polyester or glass per 25 cm of fabric width, at least 64 fill yarns of staple or texturized multifilament polyester per 25 cm of fabric length, and stitch yarns of 70-140 denier high tenacity multifilament polyester.
    • 发现缝合粘合织物是涂布研磨剂的合适基材,当织物的经向强度至少为30厘米(dN)/厘米(cm)宽度,填充纱线覆盖系数至少为40%时,以及 抗拉强度至少为0.5 daN的针纱。 为了替代已知的商品级的称为X和Y重量的研磨剂,织物优选在马里莫机上制造,其中14-22根经纱为840-1300旦尼尔高韧性复丝聚酯或每25厘米织物宽度的玻璃, 每25厘米织物长度的至少64根纬纱或织构化复丝聚酯,以及70-140旦尼尔高强度复丝聚酯的针织纱。