| 摘要 |
<p>A method of making paper in which dry chemical additives are incorporated into the pulp mixture by addition of an entire bag (20) containing the additive directly to the mixture, the improvement being that the bag is sealed with an adhesive closure (25), the adhesive being a hot melt consisting essentially of a water dispersable polyamide prepared from a diacid component comprising in major portion an aliphatic diacid of 6 or fewer carbon atoms and a diamine component consisting of one or more compounds of the formula: H2N-CyH2y-(OC2H4)x-O-CyH2y-NH2, where y is 2 or 3 and x is 1-50. Such bags will not leak in shipping and handling, and yet can be added directly to paper batches at ambient temperature in the manner of the unsealable bags employed in the prior art.</p> |
