A system and method for welding edge seams at the edges of fabric is presented. A method begins by lowering a fabric pre-fold bar onto a piece of fabric. A pre-aligned portion of the fabric is pushed on top of the pre-fold bar so that the pre-fold bar is between the portion of fabric on top of the fabric pre-fold bar and other fabric below the pre-fold bar. The fabric on top of the fabric pre-fold bar is folded edge fabric and fabric not on top of the fabric pre-fold bar is not folded edge fabric. A folded edge is formed between these two sections of fabric. The method pinches some of the fabric at the folded end and then pulls the folded edge fabric off of the fabric pre-fold bar. After that, the method welds at least some of the folded edge fabric to the not folded edge fabric.

A machine and method for welding sheets of plastic material. The machine includes a housing with a lower weld bar and an upper weld bar. A vertically-oriented gap is defined in a gripper assembly pivotally mounted to the housing beneath the work surface. A sheet of material is laid over the work surface covering the lower weld bar and gap. The upper weld bar is lowered to hold the sheet in place and a pusher plate is lowered relative to the upper weld bar to push some material into the gap, thereby creating a fold in the material. After withdrawing the upper weld bar and pusher plate, the gripper assembly is pivoted through ninety degrees and lays some of the folded material over the lower weld bar. The upper weld bar is lowered to weld a portion of the folded material and thereby create a pocket in the material.

A method for connecting plastic profile parts (2) brings into contact at least one profile part (2) and a heating surface (34) of a heating, element (36) so that the profile part (2) begins to melt in its welding area before it is joined together with the other profile part (2). A delimiting element (7) regulates the flow and deformation of the melt material. The delimiting element (7) has at least one contact element (21) and a molded part (22), which are movable both in relation to one another and in relation to the profile part (2). During the melting of the at least one profile part (2), the contact element (21) is movedtogether with the molded part (22)relative to the at least one profile part (2) and relative to the heating element (36) out of, a resting position in the direction of a working position, whereby at least the molded part (22) is kept in contact with the heating surface (34) and the contact element element (21) is, kept in contact with a profile surface (9). When a changeover is made from melting to compressing, the relatively movable contact element (21) is moved together with the molded part (22) in the direction of its working position so that the delimiting element (7) projects beyond a free front edge (4) of the at least one profile part (2) and creates a holding plane (37).

The invention comprising an appliance for vacuum sealing a bag member. The appliance has a housing including a front wall, a rear wall, and two side walls. The front wall includes an opening for receiving an open top portion of the bag member, where the bag member can then be received within a drip tray placed within a cavity located within the housing, where vacuum pressure may be applied. The drip try includes a barrier member that extends upwardly at a rear portion to redirect the open top portion of the bag member into the drip tray when the bag member has been inserted into the opening. The cavity also includes a heating bar used to apply a seal to the open top portion of the bag member. The front wall of the housing is angled between 15 and 45 relative to a surface on which the appliance rests.

A film-applying device and method for 3D glass with two opposite curved edges. The film-applying device comprises: an upper base for fixing a film; a lower base for fixing the 3D glass; a roller structure for rotating a rotary cylinder of the upper base; and a lifting cylinder for moving the upper base, the rotary cylinder, and the roller structure up and down and making the roller structure apply a pressure to press-fit the 3D glass and the film. The roller structure comprises a lower roller and an upper press roller; the rotary cylinder is used for rotating the upper base to change or fix the relative position of the upper base and the roller structure. The device has a simplified structure. The device and method are suitable for applying a film to 3D glass with two opposite curved edges due to convenient operations, high film-applying precision and efficiency.

A system and method for welding edge seams at the edges of fabric is presented. A method begins by lowering a fabric pre-fold bar onto a piece of fabric. A pre-aligned portion of the fabric is pushed on top of the pre-fold bar so that the pre-fold bar is between the portion of fabric on top of the fabric pre-fold bar and other fabric below the pre-fold bar. The fabric on top of the fabric pre-fold bar is folded edge fabric and fabric not on top of the fabric pre-fold bar is not folded edge fabric. A folded edge is formed between these two sections of fabric. The method pinches some of the fabric at the folded end and then pulls the folded edge fabric off of the fabric pre-fold bar. After that, the method welds at least some of the folded edge fabric to the not folded edge fabric.

A jig assembly and method of use are provided for positioning and re-rounding pipes for welding. The jig assembly comprises a first jaw assembly and a second jaw assembly which position and move a coupling onto one pipe then the second pipe for subsequent welding.

A system and method for welding edge seams at the edges of fabric is presented. A method begins by lowering a fabric pre-fold bar onto a piece of fabric. A pre-aligned portion of the fabric is pushed on top of the pre-fold bar so that the pre-fold bar is between the portion of fabric on top of the fabric pre-fold bar and other fabric below the pre-fold bar. The fabric on top of the fabric pre-fold bar is folded edge fabric and fabric not on top of the fabric pre-fold bar is not folded edge fabric. A folded edge is formed between these two sections of fabric. The method pinches some of the fabric at the folded end and then pulls the folded edge fabric off of the fabric pre-fold bar. After that, the method welds at least some of the folded edge fabric to the not folded edge fabric.

A method for connecting plastic profile parts (2) brings into contact at least one profile part (2) and a heating surface (34) of a heating, element (36) so that the profile part (2) begins to melt in its welding area before it is joined together with the other profile part (2). A delimiting element (7) regulates the flow and deformation of the melt material. The delimiting element (7) has at least one contact element (21) and a molded part (22), which are movable both in relation to one another and in relation to the profile part (2). During the melting of the at least one profile part (2), the contact element (21) is movedtogether with the molded part (22)relative to the at least one profile part (2) and relative to the heating element (36) out of, a resting position in the direction of a working position, whereby at least the molded part (22) is kept in contact with the heating surface (34) and the contact element element (21) is, kept in contact with a profile surface (9). When a changeover is made from melting to compressing, the relatively movable contact element (21) is moved together with the molded part (22) in the direction of its working position so that the delimiting element (7) projects beyond a free front edge (4) of the at least one profile part (2) and creates a holding plane (37).

A system and method is presented that provides a manual sonic welding device for welding multiple labels or other articles together. The manual sonic welding device includes an anvil and a head. The anvil is where the labels are placed on the welding device and allows the high frequency vibration from the welding device to be directed to the proper interfaces of the labels. The head allows the multiple labels to be assembled under pressure. Additionally, the manual sonic welding device includes a converter, a sonic horn, and a power supply to seal the multiple labels together. The power supply delivers a high power AC signal, the converter converts the electrical signal into a mechanical vibration, and the sonic horn applies the mechanical vibration to the labels to be welded. The manual sonic welding device also includes dual safety switches which activate the device.