This disclosure features use of a paper or polymer film that includes a slip agent that can transfer to its surfaces. Once the paper or film is pressed against a glass sheet, this will leave a thin surface roughness of slip agent that can prevent or reduce glass surface scratches from other surfaces or particles during shipping or finishing (e.g., cutting to size, conveyance of glass), thereby improving the yield of glass shipments between glass forming plants and customers. The thin discontinuous layer of slip agent remaining on the glass surface can be washed off easily in subsequent washing processes. The paper or film can have the slip agent imbibed within the paper or coated on it as a surface member.

A process for activating a layer supported by a glass substrate includes carrying out a heat treatment in a chamber of a stack of several examples of the glass substrate, the glass substrates being separated by an interlayer powder. The layer to be activated may be an ITO layer, or a titanium oxide layer, or an SiO.sub.2 layer, or a silver layer.

Provided is a glass interleaving paper capable of suppressing scratches on surfaces of glass plates in a manufacturing process or a distribution process for storing and transporting a plurality of stacked glass plates. The glass interleaving paper is characterized in that a main component is cellulose pulp, a basis weight is 10 to 100 g/m.sup.2, and content of mineral having a Mohs hardness of at least 5 is 400 ppm or less. When the mineral having a Mohs hardness of at least 5 is a silicate mineral, the glass interleaving paper is more useful.

This disclosure features use of a paper or polymer film that includes a slip agent that can transfer to its surfaces. Once the paper or film is pressed against a glass sheet, this will leave a thin surface roughness of slip agent that can prevent or reduce glass surface scratches from other surfaces or particles during shipping or finishing (e.g., cutting to size, conveyance of glass), thereby improving the yield of glass shipments between glass forming plants and customers. The thin discontinuous layer of slip agent remaining on the glass surface can be washed off easily in subsequent washing processes. The paper or film can have the slip agent imbibed within the paper or coated on it as a surface member.

The multilayer foam sheet includes a polyethylene resin foam layer and a resin layer laminated on at least one of the two surfaces of the foam layer. The resin layer has a multilayer structure formed from a surface layer and an intermediate layer. Both the surface layer and the intermediate layer contain a polyethylene resin and a polymeric antistatic agent. The polymeric antistatic agent is contained in the intermediate layer at a proportion of 30-70 wt % (inclusive). The polymeric antistatic agent is contained in the surface layer at a proportion of at least 5 wt % to less than 30 wt %.

Interleavant particles for location between adjacent stacked glass sheets that include an organic polymer core with an outer coating comprising rosin. The organic polymer core has a softening point greater than 60 C., a solubility in water of less than 2 g/L, a compressive strength of at least 3 MPa and a volumetric mass density less than 1.6 g/cm.sup.3. A composition, methods of producing the particles and stacking glass sheets, use of the particles to space the glass sheets and a stack of glass sheets. In one method, a solid organic polymer core and a solid outer coating material are combined by high shear mixing wherein the outer coating material has a lower melting point than the core material and the high shear mixing is effective to melt the outer coating material and to effect coating thereof onto the solid organic polymer core.