A mattress for a patient support apparatus has a cover having bottom and top surfaces, and an inflatable section disposed between the bottom and top surfaces. The inflatable section has a plurality of upper bladders in fluid communication with each other and a plurality of lower bladders in fluid communication with each other. The upper and lower bladders are selectively inflated independently from each other. The upper and lower bladders are formed by three sheets including an upper sheet, a lower sheet disposed below the upper sheet, and an intermediate sheet disposed between the upper and lower sheets. The upper sheet is fixed to the intermediate sheet to define the upper bladders between the upper sheet and the intermediate sheet. The lower sheet is fixed to the intermediate sheet to define the lower bladders between the lower sheet and the intermediate sheet. Other aspects of the mattress are also disclosed.

Peelable seals including porous inserts are described. An example peelable seal includes a porous insert positioned between a first sheet and a second sheet. The porous insert includes a plurality of interwoven strands and a plurality of pores adjacent the interwoven strands through which a bond is formed between the first sheet and the second sheet when heat is applied to at least one of the first sheet, the second sheet or the porous insert.

The invention relates to a lining element (10) for the rehabilitation of a pipeline, having a carrier layer (16) consisting of an expandable, resin-absorbent material which, in the longitudinal direction (L.sub.1, L.sub.2) of the carrier layer (16), has a first expansion rigidity, and a stiffening structure (24) which, in the longitudinal direction (L.sub.1, L.sub.2) of the carrier layer (16), has a second expansion rigidity, wherein the first expansion rigidity is lower than the second expansion rigidity and wherein the stiffening structure (24) is incorporated into the carrier layer (16).

The present invention relates to the technical field of high molecular materials, in particular to a polyhydroxyalkanoate molded body and a preparation method therefor. The preparation method comprises: mixing polyhydroxyalkanoate raw materials, processing same at a first temperature, and drawing same at a second temperature, wherein the first temperature is 10-60? C. higher than the melting point of a polyhydroxyalkanoate resin; the second temperature is higher than the glass transition temperature of a hydroxyalkanoate resin and lower than the melting point of the polyhydroxyalkanoate resin; and during the preparation process, under the condition of the second temperature, the following conditions need to be met: the draw ratio is 1.0 time or more, and the heating time at the temperature T is 30 s or more; or, the draw ratio is 3.0 times or more, and the heating time at the temperature T is 10 s or more. In the present invention, by optimizing the processing technology, a non-sticky molded body can be prepared; and the preparation method is simple and controllable, and can improve the processing and production efficiency.

An endless conveyor belt loop includes a conveyor belt that has an elongated body and a substantially uniform width. The ends of the conveyor belt each include a splice formation extending across the width of the conveyor belt that are each configured to mate with the other. A thermoplastic connector is thermally engaged between exposed surfaces formed by the splice formation at the ends of the conveyor belt. When the splice formations are aligned, the thermoplastic connector is thermally engaged and continuously interconnected between the ends for conveyor belt to form a seamless end connection. The thermoplastic connector comprises a thermoplastic copolyester elastomer.

An endless conveyor belt loop includes a conveyor belt that has an elongated body and a substantially uniform width. The ends of the conveyor belt each include a splice formation extending across the width of the conveyor belt that are each configured to mate with the other. A thermoplastic connector is thermally engaged between exposed surfaces formed by the splice formation at the ends of the conveyor belt. When the splice formations are aligned, the thermoplastic connector is thermally engaged and continuously interconnected between the ends for conveyor belt to form a seamless end connection. The thermoplastic connector comprises a thermoplastic copolyester elastomer.

An endless conveyor belt loop includes a conveyor belt that has an elongated body and a substantially uniform width. The ends of the conveyor belt each include a splice formation extending across the width of the conveyor belt that are each configured to mate with the other. A thermoplastic connector is thermally engaged between exposed surfaces formed by the splice formation at the ends of the conveyor belt. When the splice formations are aligned, the thermoplastic connector is thermally engaged and continuously interconnected between the ends for conveyor belt to form a seamless end connection. The thermoplastic connector comprises a thermoplastic copolyester elastomer.

An endless conveyor belt loop includes a conveyor belt that has an elongated body and a substantially uniform width. The ends of the conveyor belt each include a splice formation extending across the width of the conveyor belt that are each configured to mate with the other. A thermoplastic connector is thermally engaged between exposed surfaces formed by the splice formation at the ends of the conveyor belt. When the splice formations are aligned, the thermoplastic connector is thermally engaged and continuously interconnected between the ends for conveyor belt to form a seamless end connection. The thermoplastic connector comprises a thermoplastic copolyester elastomer.

Peel ply for surface preparation and a method of surface preparation prior to adhesive bonding. A resin-rich peel ply is applied onto a curable, resin-based composite substrate, followed by co-curing. After co-curing, the composite substrate is fully cured but the matrix resin in the peel ply remains partially cured. When the peel ply is removed, a roughened, bondable surface with chemically-active functional groups is revealed. The composite substrate with the chemically-active, bondable surface may be bonded to another composite substrate to form a covalently-bonded structure.

Peel ply for surface preparation and a method of surface preparation prior to adhesive bonding. A resin-rich peel ply is applied onto a curable, resin-based composite substrate, followed by co-curing. After co-curing, the composite substrate is fully cured but the matrix resin in the peel ply remains partially cured. When the peel ply is removed, a roughened, bondable surface with chemically-active functional groups is revealed. The composite substrate with the chemically-active, bondable surface may be bonded to another composite substrate to form a covalently-bonded structure.