Multilayered elastic laminates with enhanced strength and elasticity and methods of making thereof

摘要

Stronger elastic laminates, as well as methods of preparing the laminates, are disclosed herein. Particularly, the present disclosure is directed to multilayered elastic laminates including a thermoplastic elastomeric film layer and a plastic layer coextruded together, and further, a facing material laminated to the thermoplastic elastomeric film layer. The laminates are stretched and then relaxed. The prepared laminates have enhanced overall strength and elasticity while having a soft, cloth-like feel, and are prepared at a lower cost.

主权项

1. A multilayered elastic laminate comprising:
a first thermoplastic elastomeric film layer having a permanent set of less than 40% after 150% elongation, the thermoplastic elastomeric film comprising a polyolefin-based thermoplastic elastomer, a styrenic block copolymer, and from about 3% by weight to about 8% by weight of a strength-enhancing agent, wherein the film layer is substantially free of calcium carbonate; a first plastic layer affixed to a first surface of the thermoplastic elastomeric film layer, the plastic layer having a permanent set at least 50% greater than the permanent set of the elastomeric film layer, and a facing material affixed to a second surface of the thermoplastic elastomeric film layer.