Abstract: Disclosed herein is a driver-type golf club head that has a strike face. The strike face has a central region, defined by a 40 mm by 20 mm rectangular area centered on a geometric center of the strike face and elongated in a heel-to-toe direction. The driver-type golf club head is configured such that after 500 impacts of a standard golf ball at the geometric center of the strike face, where at each impact the standard golf ball has a velocity of 52 meters per second, the CT of the strike face at any point within the central region is less than 256 microseconds and the CT at the geometric center of the strike face is no more than five microseconds different than the initial CT value.

Abstract: A method of making a golf club head includes interposing bonding tape between a first piece and a second piece of the golf club head such that the first piece is temporarily adhered to the second piece via a tackiness of the bonding tape. The method additionally includes positioning the first piece, the second piece, and the bonding tape, interposed between the first piece and the second piece, in a vacuum bag, and reducing a pressure within the vacuum bag, relative to a pressure external to the vacuum bag, such that the vacuum bag collapses onto the first piece and the second piece and compresses the bonding tape between the first piece and the second piece. The method also includes heating the bonding tape, at least to a curing temperature of the bonding tape, when the pressure within the vacuum bag is reduced.

Abstract: Disclosed herein is a driver-type golf club head including a metallic front body portion having a first front body portion and a second front body portion, both of which are metallic, and portions of each form a strike plate opening that receives a strike plate.

Abstract: Disclosed herein is a driver-type golf club head that is made from at least one first material, having a density between 0.9 g/cc and 3.5 g/cc, at least one second material, having a density between 3.6 g/cc and 5.5 g/cc, and at least one third material, having a density between 5.6 g/cc and 20.0 g/cc. The first material has a first mass no more than 55% and no less than 25% of the total mass of the golf club head. The second material has a second mass no more than 65% and no less than 20% of the total mass of the golf club head. The third material has a third mass equal to the total mass of the golf club head less the first mass of the first material and the second mass of the second material.

Abstract: Disclosed here is a method of making a golf club head. The method comprises steps of laser ablating a second-part surface of a second part of the golf club head such that a second-part ablated surface is formed in the second part, and bonding together a first-part surface, of a first part of the golf club head, and the second-part ablated surface of the second part of the golf club head.

Abstract: Disclosed herein is a driver-type golf club head that has a strike face. The strike face has a central region, defined by a 40 mm by 20 mm rectangular area centered on a geometric center of the strike face and elongated in a heel-to-toe direction. The driver-type golf club head is configured such that after 500 impacts of a standard golf ball at the geometric center of the strike face, where at each impact the standard golf ball has a velocity of 52 meters per second, the CT of the strike face at any point within the central region is less than 256 microseconds and the CT at the geometric center of the strike face is no more than five microseconds different than the initial CT value.

Abstract: A golf club head that comprises a hollow interior cavity, a first piece, a second piece, adhesively bonded to the first piece along a first bonded joint, a third piece, adhesively bonded to the first piece along a second bonded joint, and a fourth piece, adhesively bonded to the first piece along a third bonded joint. A volume of the golf club head is at least 120 cubic centimeters (cc) and at most 600 cc. The first bonded joint has a first-joint bond area. The second bonded joint has a second-joint bond area. The third bonded joint has a third-joint bond area. A summation of the first-joint bond area, the second-joint bond area, and the third-joint bond area is at least 1,950 mm2 and at most 3,400 mm2.

Abstract: Disclosed herein is a driver-type golf club head that is made from at least one first material, having a density between 0.9 g/cc and 3.5 g/cc, at least one second material, having a density between 3.6 g/cc and 5.5 g/cc, and at least one third material, having a density between 5.6 g/cc and 20.0 g/cc. The first material has a first mass no more than 55% and no less than 25% of the total mass of the golf club head. The second material has a second mass no more than 65% and no less than 20% of the total mass of the golf club head. The third material has a third mass equal to the total mass of the golf club head less the first mass of the first material and the second mass of the second material.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: A golf club head that includes a first part, a second part, and an adhesive between and bonding together a first-part bonding surface and a second-part ablated bonding surface. The second-part ablated bonding surface includes a second-part ablation pattern of peaks and valleys. The second-part ablation pattern of peaks and valleys includes first paths spaced apart relative to each other, and second paths spaced apart relative to each other and intersecting the first paths at spaced apart locations. Each one of the first paths and the second paths has a depth, relative to the peaks, that varies along its length. The depths of the first paths and the second paths are greater at the spaced apart locations where the first paths and the second paths intersect than where the first paths and the second paths do not intersect.

Abstract: Disclosed herein is a driver-type golf club head that has a strike face. The strike face has a central region, defined by a 40 mm by 20 mm rectangular area centered on a geometric center of the strike face and elongated in a heel-to-toe direction. The driver-type golf club head is configured such that after 500 impacts of a standard golf ball at the geometric center of the strike face, where at each impact the standard golf ball has a velocity of 52 meters per second, the CT of the strike face at any point within the central region is less than 256 microseconds and the CT at the geometric center of the strike face is no more than five microseconds different than the initial CT value.

Abstract: A golf club head comprises a forward portion, comprising a strike face, and at least one tracking marker, configured to be tracked by a launch monitor and permanently embedded in the forward portion. The at least one tracking marker comprises a retroreflective surface that is more retroreflective than the strike face.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: Disclosed herein is a driver-type golf club head that is made from at least one first material, having a density between 0.9 g/cc and 3.5 g/cc, at least one second material, having a density between 3.6 g/cc and 5.5 g/cc, and at least one third material, having a density between 5.6 g/cc and 20.0 g/cc. The first material has a first mass no more than 55% and no less than 25% of the total mass of the golf club head. The second material has a second mass no more than 65% and no less than 20% of the total mass of the golf club head. The third material has a third mass equal to the total mass of the golf club head less the first mass of the first material and the second mass of the second material.

Abstract: A golf club including at least one component with a construction that includes a composite material with color/metallic coated fibers. In some embodiments, at least a portion of an outer surface of the golf club head is defined by a layered structure including color/metallic coated fibers. The layered structure may include a non-woven composite layer comprising a plurality of unidirectional fiber composite plies and woven composite layer disposed over the non-woven fiber composite layer and including color/metallic coated fibers. In some embodiments, an optically transparent coating may be disposed over the woven composite layer. In some embodiments, the color/metallic coated fibers may be electroplated fibers.

Abstract: A method of making a golf club head includes interposing bonding tape between a first piece and a second piece of the golf club head such that the first piece is temporarily adhered to the second piece via a tackiness of the bonding tape. The method additionally includes positioning the first piece, the second piece, and the bonding tape, interposed between the first piece and the second piece, in a vacuum bag, and reducing a pressure within the vacuum bag, relative to a pressure external to the vacuum bag, such that the vacuum bag collapses onto the first piece and the second piece and compresses the bonding tape between the first piece and the second piece. The method also includes heating the bonding tape, at least to a curing temperature of the bonding tape, when the pressure within the vacuum bag is reduced.

Abstract: A golf club head comprises a forward portion, comprising a strike face, and at least one tracking marker, configured to be tracked by a launch monitor and permanently embedded in the forward portion. The at least one tracking marker comprises a retroreflective surface that is more retroreflective than the strike face.

Abstract: A golf club including at least one component with a construction that includes a composite material with color/metallic coated fibers. In some embodiments, at least a portion of an outer surface of the golf club head is defined by a layered structure including color/metallic coated fibers. The layered structure may include a non-woven composite layer comprising a plurality of unidirectional fiber composite plies and woven composite layer disposed over the non-woven fiber composite layer and including color/metallic coated fibers. In some embodiments, an optically transparent coating may be disposed over the woven composite layer. In some embodiments, the color/metallic coated fibers may be electroplated fibers.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: A method of creating a multi-layer composite strike face of a golf club head includes positioning a first non-cluster panel. The method also includes creating and attaching a cluster panel to the first non-cluster panel, which includes attaching a first elongated strip to the first non-cluster panel at a first strip angle, attaching a second elongated strip to a portion of the first elongated strip and a portion of the first non-cluster panel at a second strip angle, and attaching a third elongated strip to a portion of the second elongated strip, and a portion of the first non-cluster panel at a third strip angle.