A glass panel unit manufacturing method includes a punching step and a pillar mounting step. In the punching step, a punch punches at least one of a plurality of portions from a base material of a sheet to form at least one pillar. Each of the plurality of portions is surrounded by a corresponding one of a plurality of loop-shaped grooves in the base material. In the pillar mounting step, the at least one pillar is mounted on a surface of a first substrate including a glass pane.

Disclosed is an electric puncher. The electric puncher includes at least one punching device, a rotating shaft and a drive unit. The punching device further includes a support frame arranged on the base and a punching assembly that moves up and down along the support frame. The rotating shaft can be connected with the support frame through rotation. The rotating shaft is furnished with eccentric cams that drive the punching assembly to move up and down. The staggered arrangement of eccentric cams enables the punching assemblies to asynchronously move up and down during the rotation of rotating shaft. The drive unit drives the rotating shaft to rotate. The asynchronous vertical motion of various punching assemblies helps to save labor, thereby alleviating the requirements for motor output power and gear strength.

A sheet material (1) consisting of an mixture consisting essentially of: a) 10-50 percent by weight of random-oriented fibres, and; b) 90-50 percent by weight of a thermoplastic or thermoplastic elastomer; the weight percentages being based on the overall homogeneous mixture; and the sheet material having at room temperature a Shore D hardness of 40 to 85, preferably of 40 to 60, more preferably of 45 to 55. The sheet material (1) is used as a support in punching applications or as the top layer in punching belts (2).

The present invention belongs to the technical field of puncher, specifically involving EG-1680 Three hole electric puncher, including the base, punching device, rotating shaft and drive unit; there are at least 2 sets of said punching devices, including the support frame arranged on the base and the punching assembly that moves up and down along the said support frame; the said rotating shaft can be connected with the support frame through rotation; the rotating shaft is furnished with appropriate eccentric cams that drive the punching assembly to move up and down; the staggered arrangement of eccentric cams enables the punching assemblies to asynchronously move up and down during the rotation of rotating shaft; the said drive unit is designed to drive the rotating shaft to rotate; the asynchronous vertical motion of various punching assemblies helps to save labor, thereby alleviating the requirements for motor output power and gear strength; this product is compact in structure, easy to use, cost effective, and stable in function.

A system for punching at least one hole in at least one sheet-like material. In particular, a device and system that is uniquely configured and sized to be a table top unit for automatic punching of paper. The system has a sheet feeder, a sheet transport module and a punching die module that allows a punching die to be easily changed. The paper being punched by the punching die module is moved only a short distance from the sheet feeder and while the paper is still supported by the sheet feeder. The sheet feeder is located outside the system's housing to facilitate adjustment and troubleshooting. This advantageously allows for a smaller, compact unit that is effective and efficient.

A print finishing machine has a die and a drive mechanism. The drive mechanism is driven by a motor and the drive mechanism is configured to drive a stack of sheets of material through the die in order to cut the stack according to the shape of the die.

Entry sheet for drilling including a metallic foil and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, in which the layer of the resin composition has a peak attributable to a carbon atom-oxygen atom double bond appearing at 1700 to 1750 cm.sup.1 and a peak attributable to a carbon atom-oxygen atom single bond appearing at 1080 to 1300 cm.sup.1 in infrared spectroscopy, and when the absorbance at the peak attributable to the carbon atom-oxygen atom double bond appearing at 1700 to 1750 cm.sup.1 is represented by Abs(CO)L, and the absorbance at the peak of the carbon atom-oxygen atom single bond appearing at 1080 to 1300 cm.sup.1 is represented by Abs(CO)L, the layer of the resin composition has an absorbance ratio (C) of 0.12 to 1.80, the absorbance ratio (C) represented by the following expression (1).
Absorbance ratio(C)=Abs(CO)L/Abs(CO)L Expression (1).

An entry sheet for drilling comprising: a metallic foil; and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, wherein the surface of the layer of the resin composition, the surface being in contact with the metallic foil, has a dispersion term SD of surface free energy in a range from 27.0 to 37.0 mJ/m.sup.2 and a polar term SP of the surface free energy in a range from 0 to 5.0 mJ/m.sup.2.

An expandable package filler or ornament includes a stack of sheets, such as tissue paper, foil, etc. The stack is bound together, such as by a fastener. A generally spiral cut extends from a peripheral edge of the stack toward the center of the each sheet. The cut forms each sheet into a generally spiral strip ending in a peninsula portion. Grasping the peninsula portion, lifting and shaking the stack causes the strips to fall and entangle with each other. The resulting structure is decorative and may be used to stuff a gift box, bag or basket.

A glass panel unit manufacturing method includes a punching step and a pillar mounting step. In the punching step, a punch punches at least one of a plurality of portions from a base material of a sheet to form at least one pillar. Each of the plurality of portions is surrounded by a corresponding one of a plurality of loop-shaped grooves in the base material. In the pillar mounting step, the at least one pillar is mounted on a surface of a first substrate including a glass pane.