glass cup with handle

In the production of glass cups, the following methods are usually used to weld the glass handle to the cup body:

Flame Heating Welding Method: Use a high-temperature flame to heat the connection between the glass cup body and the handle, softening the glass surface. Then, apply external force to press the handle and the cup body together. After cooling, the two will be welded into one.

 

Operation process: The craftsman first fixes the prepared glass cup body and handle on a specific fixture to ensure that the connection between the two is accurately aligned. Then, use a blowtorch or a special flame heating device to align the flame at the connection to heat it evenly. When the glass surface begins to soften, the operator applies appropriate pressure to ensure the handle fits tightly with the cup body. The glass is then cooled naturally or with air cooling to accelerate the cooling process and complete the welding.

Automatic Welding Equipment Welding Method: Use automated equipment to achieve precise positioning and transportation of the glass cup body and handle, use a welding gun to burn and heat the connection part, and after the glass softens, attach the handle to the cup body to complete the welding, to improve welding efficiency and quality.

Operation process: The equipment usually includes a cup body feeding component, a handle conveying component, and a welding component. First, the cup body feeding component conveys the glass cup body to the designated welding position, and the handle conveying component also conveys the glass handle. Then, the welding gun in the welding component heats the connection part of the glass cup body and the glass handle to a certain temperature to soften the glass. Finally, the handle conveying component accurately attaches the handle to the cup body to achieve the connection between the two.

The material for glassware handles should be heat-resistant, compatible with the cup body, strong, and aesthetically pleasing. The first choice is glass itself, especially the same type as the cup body, such as high borosilicate glass paired with a high borosilicate handle. This ensures the same thermal expansion coefficient during welding, reducing the risk of cracking.

 

If you want the glassware to have more variety, consider designing diverse handle shapes. For example, colored high borosilicate glass handles, S-shaped handles, or heart-shaped handles can all be incorporated into the design.

Next, wooden handles are also quite common. For example, teacups can use wooden panels (such as beech or walnut) attached to the glass handle with waterproof adhesive, adding a natural touch. However, contact with water should be avoided to prevent the wood from warping.

 

Wood and glass are very different materials with distinct physical properties—such as thermal expansion rates—and wood is prone to moisture damage. Therefore, these factors must be considered when joining them. What are some possible connection methods? For example: mechanical fastening (screws, clips, or embedding metal parts in the wood before attaching to the glass), adhesive bonding (using food-grade waterproof glue for safety), or a combination of both.

 

Key considerations include:

-Whether the adhesive meets food-contact safety standards.

-Whether the wood treatment agents are non-toxic.

Then, the treatment of the wood is also crucial. For example, material selection—what types of wood are suitable for handles? Factors like hardness, water resistance, and aesthetics must be considered. Common choices include beech, walnut, and oak, as these woods are hard, less prone to warping, and visually appealing.

 

Additionally, the wood surface needs waterproofing, such as sealing with lacquer, wax, or wood oil, to prevent mould or deformation when exposed to moisture. Design aesthetics also matter—how the shape of the wooden handle complements the glass cup (e.g., sleek curves, vintage styles) and how the wood grain and colour enhance the overall look.

 

Durability is another key point. Consider long-term maintenance, such as regular conditioning to prevent cracking and ensure the handle stays in good condition over time.

Dingmu has emerged as one of the top glassware manufacturing and marketing businesses in Xi’an over the last 15 years. Xi’an Dingmu is known for our competitive pricing and focuses on manufacturing quality glassware products.

Xi'an Dingmu Household Products Design & Manufacture Co., Ltd.