With a method of cutting a tube glass (G1) according to the present invention, the tube glass (G1) is irradiated with laser light (L) having a focal point (F) adjusted to an inside of the tube glass (G1), to thereby form an inner crack region (C1) including one or more cracks in a portion of the tube glass (G1) in a circumferential direction of the tube glass (G1) through multiphoton absorption that occurs in an irradiation region of the laser light (L). Then, in the tube glass (G1), there is generated a stress that urges the one or more cracks in the inner crack region (C1) to propagate in the circumferential direction of the tube glass (G1) to cause the one or more cracks to propagate throughout an entire circumference of the tube glass (G1), to thereby cut the tube glass (G1).

A method and apparatus for producing glass products from tubular glass precursors is provided. In particular, a method and apparatus for separating tube glass into sized glass tube portions, produced glass tube portions, glass precursor portions, or glass product portions, and their use as pharmaceutical packaging are provided. The tube glass or the glass precursor or the glass product is provided with filaments along predetermined breaking planes. The filaments extend obliquely to the local wall radius and allow for clean separation of the tube glass or the glass precursor or the glass product.

A method and apparatus for producing glass products from tubular glass precursors is provided. In particular, a method and apparatus for separating tube glass into sized glass tube portions, produced glass tube portions, glass precursor portions, or glass product portions, and their use as pharmaceutical packaging are provided. The tube glass or the glass precursor or the glass product is provided with filaments along predetermined breaking planes. The filaments extend obliquely to the local wall radius and allow for clean separation of the tube glass or the glass precursor or the glass product.

Method for manufacturing a hollow item made of glass, involving receiving a glass item associated with a moil (cap) at a temperature in excess of 100 C., setting the glass item in motion in a direction of conveying and in rotation on itself about an axis of the glass item, moving mobile equipment at a substantially constant distance from the glass item, identifying a relative position of the mobile equipment with respect to an edge of the glass item, regulating the distance between the mobile equipment and an edge of the glass item as the glass item is rotating and as the mobile equipment and the glass item are jointly moving along, firing a laser beam from optics supported by the mobile equipment toward said edge of the glass item in order to make holes and to part the glass item from the moil.

Method for manufacturing a hollow item made of glass, involving receiving a glass item associated with a moil (cap) at a temperature in excess of 100 C., setting the glass item in motion in a direction of conveying and in rotation on itself about an axis of the glass item, moving mobile equipment at a substantially constant distance from the glass item, identifying a relative position of the mobile equipment with respect to an edge of the glass item, regulating the distance between the mobile equipment and an edge of the glass item as the glass item is rotating and as the mobile equipment and the glass item are jointly moving along, firing a laser beam from optics supported by the mobile equipment toward said edge of the glass item in order to make holes and to part the glass item from the moil.

Disclosed are flexible glass and a preparation method therefor; weight proportions of the raw materials used in the flexible glass are: 60.04-63.01 parts silicon dioxide, 16.7-21.5 parts aluminum oxide, 12.93-19.85 parts boron oxide, 2.43-14.19 parts calcium carbonate, 0.16-2.07 parts magnesium oxide. 0.5-2.74 parts strontium carbonate and 0-4.16 parts barium nitrate. The method includes: step 1: pouring raw materials into a mixer, and uniformly mixing to form a mixture; step 2: adding the mixture into a glass furnace, heating to melt the glass, and the melted glass entering a platinum feeding channel for clarification and flowing into a tube drawing tunnel; step 3: drawing the liquid glass into a long glass tube; step 4: using a laser cutting machine to transversely and longitudinally cut the glass tube according to specification requirements, forming a glass sheet; step 5: inspecting the glass sheet, and preparing a flexible glass product.

A method and apparatus is provided for producing a hollow glass body product including a hollow glass body having an outer surface with a first end portion and a second end portion, the first end portion being sealed by a first bottom and the second end portion being sealed by a second bottom. A plurality of spaced apart filamentary defects are provided in the outer surface and at least part of the filamentary defects form open passages connecting an interior of the hollow glass body to the outer surface thereof. Each individual passage has a diameter in the micrometer range between more than 0 micrometers and less than 50 micrometers. A plurality of the micrometer range-sized open passages provides a total cross-sectional area sufficiently large for venting and/or pressure equalization.

A bottle cutter apparatus, systems and methods of using the same are provided. Specifically, the bottle cutter apparatus comprises a stage for holding a bottle and a rotatable arm having a blade thereon for scoring a glass bottle, or any glass tubular item. The stage is modular and movable, thereby accommodating different sized bottles thereon for precise scoring with the arm and blade.

A bottle cutter apparatus, systems and methods of using the same are provided. Specifically, the bottle cutter apparatus comprises a stage for holding a bottle and a rotatable arm having a blade thereon for scoring a glass bottle, or any glass tubular item. The stage is modular and movable, thereby accommodating different sized bottles thereon for precise scoring with the arm and blade.

A process for preparing a glass container that includes: providing a glass tube with a first portion, a second portion, and a longitudinal axis (L.sub.tube); holding the first portion in a first clamping chuck and the second portion in a second clamping chuck; rotating the glass tube around the longitudinal axis (L.sub.tube); heating, via a heater, the glass tube above a glass transition temperature; separating the first and second portions from one another by pulling apart along the longitudinal axis (L.sub.tube) while the heated glass tube is still rotating by moving the first and the second chucks away from each other; and moving the heater, while moving the first and second chucks away from each other, so that the heater follows a mass that remains at a circular end region of the first and/or second portion.