Lens seal for headgear
An article of headgear that has a head-covering article, a lens moveably attached to the head-covering article, and a seal attached to the lens, the seal comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material. In an exemplary embodiment, the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal sealingly engages the head-covering article. In some embodiments, the tensile modulus of the first polymeric material is at least about 5× greater or even about 10× greater than the tensile modulus of the second material.
1. An article of headgear comprising:
a head-covering article;
a lens moveably attached to the head-covering article by a frame; and
a seal attached to the lens, the seal comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material;
wherein the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal engages the head covering article.
2. The article of claim 1 , wherein the tensile modulus of the first polymeric material is at least about 5× greater than the tensile modulus of the second material.
3. The article of claim 1 , wherein each of the first polymeric material and the second polymeric material is a polyolefin-based thermoplastic elastomer.
4. The article of claim 1 , wherein the seal comprises a sealing portion and an attachment portion, and the second material is present in the sealing portion.
5. The article of claim 4 , wherein the second material is present on a surface of the sealing portion.
6. The article of claim 1 , wherein the seal comprises a sealing portion and an attachment portion, and the second material is present in the attachment portion.
7. The article of claim 1 , wherein the lens comprises a groove therein, with an attachment portion of the seal inserted into the groove.
8. The article of claim 7 , wherein the attachment portion of the seal is mechanically anchored in the groove.
9. The article of claim 1 wherein the seal is removably attached to the lens.
10. An article of headgear comprising:
a head-covering article;
a lens moveably attached to the head-covering article by a frame, the lens having a curve associated therewith;
a seal attached to the lens, the seal being curved and comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material;
wherein the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal engages the head covering article.
11. The article of claim 10 , wherein the curved seal comprises a sealing portion and an attachment portion, and the second material being present in the sealing portion.
12. The article of claim 11 , wherein the second material is present on a surface of the sealing portion that faces the head-covering article.