The plate member (117) is preferably of a harder material such as hard plastic.
The shell (14) may include an interior wall (16) composed of a sheet of hard plastic or articulated sections of hard plastic or metal.
Machine tools for working hard plastics
A hard plastic button (24) on that end of the stem, may be surrounded by the soft plastic (19).
The needle-holder guide sleeve (6), consisting of a hard plastic, accommodates a drive part (8), likewise consisting of a hard plastic, which engages with the protective cap (1) and is provided with a substantially helical guide groove (8').
The main brush unit is made from a hard compact plastic with the requisite strength and provided along the handle with at least one groove which is at least mostly filled with a softer elastically deformable plastic.
Other parts would be made of hard and flexible plastic.
The handle base (5) comprises an elongate section (10) for grasping it that consists of a rigid plastic material with soft plastic zones embedded therein.
The reinforcement consists of ledges made of narrow sheet metal coated with a hard synthetic material or of a mineral-reinforced or hard synthetic material.
The external case (31) is formed of a nylon resin which is a transparent hard plastic with solvent resistance.
The earphone case (2) comprises a hard plastic earplug (3) and a sensing cover (6).
The device comprises an extruded or molded shell made of a hard polycarbonate or similar hard plastic resin.
The safety hat is fabricated from a hard plastic type material or other equivalent impact resistant materials.
A pin (P) of this invention is provided with a base (19) of soft plastic attached to the stem (18) opposite the conical point (17), thereby avoiding the tendency of the hard plastic, to produce irritation of the ear.
A solid plastic backing sheet (24) underlies the spacer layer to direct all air flow out from the spacer layer (42), the plastic sheet (24) also forming the blower pouch.
The hook body (14) and mounting portion (16) are preferably made of a hard plastic whereas the hook holder (2) is made of a clear, flexible, soft plastic.
The invention concerns a device consisting of a hard plastic tray (10), sealed with a transparent plastic film (20), wherein have been previously introduced the fish or aquatic plants and water.