Laminate, method for cutting laminate, method for processing laminate, and device and method for cutting brittle plate-like object
AssigneeNippon Electric Glass Co., Ltd.
InventorsYoshiharu MIWA, Yoshinori HASEGAWA, Takayuki NODA, Hiroki MORI, Michiharu ETA
Life of this patent
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Abstract
Provided is a laminate (1) obtained by integrally laminating glass sheets (4) on both surfaces of a resin sheet (2). The glass sheets (4) have a thickness of 300 μm or less and end surfaces (4a) of the glass sheets (4) are chamfered.
Claims19
1-6. (canceled)
A manufacturing method for a laminate, comprising:
- a lamination step of integrally laminating a glass sheet having a thickness of 300 μm or less on at least one of both surfaces of a resin sheet;
- and
- a chamfering step of chamfering an end surface of the glass sheet that is integrally laminated on the resin sheet in the lamination step.
10-14. (canceled)
A cutting method for a laminate, comprising carrying out laser fusing by irradiating the laminate with a laser beam from one side thereof, the laminate being obtained by integrally laminating glass sheets on both surfaces of a resin sheet,
- the laser beam having a focal point adjusted inside the laminate at a position that is set within a range of more than 50% and 90% or less of an overall thickness of the laminate from an incident surface side of the laser beam.
A processing method for a laminate, comprising:
- a cutting step of cutting the laminate obtained by integrally laminating a glass sheet on at least one of both surfaces of a resin sheet;
- and
- a finishing step of finishing a cut surface of the laminate that is formed in the cutting step,
- the finishing step comprising:
- a first phase of processing a cut surface of the glass sheet by grinding, and leaving at least a part of a cut surface of the resin sheet in an unprocessed state;
- and
- a second phase of processing only the cut surface of the resin sheet that is left in the unprocessed state.
25-31. (canceled)
A cutting method for a brittle sheet-like object, comprising cutting a preset cutting line of the brittle sheet-like object, which is supported in a horizontal posture from a bottom side thereof by a support member, by radiating a laser beam along the preset cutting line so as to divide the brittle sheet-like object into a product portion and a non-product portion across the preset cutting line,
- the cutting of the preset cutting line being completed under a state in which the product portion is located higher than the non-product portion, the state being achieved at least immediately before completion of the cutting of the preset cutting line.
Dependencies are inferred from the claim text.