Fabric finishing
View Patent ↗A fabric, such as a loop fastener material, is finished by applying a foam to a surface of the fabric, the foam containing both a liquid binder and a powder. The binder is allowed to flow into pores of the fabric and coat fiber interstices of the fabric as the foam collapses, and is dried to stabilize the fabric. The powder is of a particle size selected to cause most of the powder to remain on the surface of the fabric while the binder is dried to bond the powder to the fabric surface. The powder, as bonded to the fabric surface, is activatable, such as by heat or RF or UV energy, to adhere the stabilized fabric to another surface or to provide a desired surface property.
1. A method of bonding a fastener loop material to a mounting surface, the method comprising:
providing a fastener loop material having a surface opposite hook-engageable loops of the fastener loop material, the fastener loop material comprising particles of resin held to the fastener loop material by a dried binder and of a particle size larger than spaces between surface fibers of the fastener loop material, such that the resin particles are distributed primarily on the surface of the fastener loop material;
activating the surface of the fastener loop material to cause the particles of resin to soften; and
bringing the surface of the fastener loop material into contact with the mounting surface,
wherein softened particles of resin on the activated surface bond the fastener loop material to the mounting surface, with the hook-engageable loops of the fastener loop material exposed for hook engagement.
2. The method of claim 1 , wherein the surface of the fastener loop material is activated after being brought into contact with the mounting surface.
3. The method of claim 1 , wherein activating the surface of the fastener loop material comprises applying heat to raise a temperature of the resin particles above a softening point of the resin particles but below a melting point of the dried binder.
4. The method of claim 1 , wherein activating the surface of the fastener loop material comprises applying energy at a radio frequency under conditions that cause the resin particles to soften without significantly softening the dried binder or resin of the loops.
5. The method of claim 1 , wherein the particles of resin on the surface of the fastener loop material comprise a co-polyester powder.
6. The method of claim 1 , wherein the mounting surface comprises vinyl and wherein the particles of resin on the surface of the fastener loop material also comprise vinyl.
7. The method of claim 1 , wherein, as a result of the method, the fastener loop material is welded to the mounting surface.
8. The method of claim 1 , wherein the fastener loop material, prior to activation, is air-permeable.
9. The method of claim 1 , wherein the fastener loop material comprises a knit loop fastener material.
10. A method of bonding a fastener loop material to a mounting surface, the method comprising:
activating a surface of a fastener loop material opposite hook-engageable loops of the fastener loop material to cause particles of resin at the surface of the fastener loop material to soften, the particles being held to the fastener loop material by a dried binder; and
bringing the surface of the fastener loop material into contact with the mounting surface,
wherein softened particles of resin at the activated surface bond the fastener loop material to the mounting surface, with the hook-engageable loops of the fastener loop material exposed for hook engagement, and
wherein the particles at the surface of the fastener loop material comprise a first set of particles formed of a first resin, and a second set of particles formed of a second resin, the first and second sets of particles having different activation properties, and wherein activating a surface of the fastener loop material comprises activating the first set of particles while the second set of particles remains substantially unactivated.
11. The method of claim 10 , further comprising, after activating the first set of particles, and while the fastener loop material is bonded to the mounting surface, activating the second set of particles to enhance bonding of the fastener loop material to the mounting surface.
12. The method of claim 10 , wherein the first set of particles forms a releasable bond with the mounting surface, and wherein activation of the second set of particles results in a permanent bond with the mounting surface.
13. The method of claim 1 , further comprising, before activating the surface of the fastener loop material, unspooling the fastener loop material.
14. The method of claim 1 , wherein, prior to activation, the particles of resin on the surface are held to the surface of the fastener loop material by a dried binder.
15. The method of claim 14 , wherein the fastener loop material comprises a fabric, and wherein the particles of resin on the surface of the fastener loop material are of a powdered substance of the fastener loop material, a majority of which powdered substance is disposed on the surface of the fabric for bonding the fabric to the mounting surface upon activation.