Abstract:
A flexible packaging material for making dimensionally-stable containers, intended especially for food and exhibiting barrier qualities, comprises a stiffening, polymeric core layer (1) which on both sides has a protective layer (2, 3) of polymeric material connected thereto. The core layer (1) consists of a foamed thermoplastic and has a thickness that makes up about 70-95 % of the total thickness of the material, while the protective layer or layers (2, 3) consist of non-foamed thermoplastic and make up the remainder of the thickness of the material. A container made of this material has a trough element with a circumferential flange, as well as a lid element with a corresponding circumferential flange. These flanges are applicable against each other, and at least the one flange is provided with an adhesive for original sealing of the container. In a method for producing the packaging material, the core layer (1) is brought to a viscosity (iv) of 0.68-0.82 before the lamination, and the protective layers (2, 3) are brought to a viscosity (iv) of 0.68-0.72. The lamination is so controlled that the difference in viscosity (iv) between the core layer (1) and the protective layers (2, 3) at all times exceeds 0.04. The packaging material is primarily used for making dimensionally-stable liquid-tight containers, which are produced by thermoforming or other mechanical processing and which exhibit barrier qualities.
Abstract:
The invention is a permanent elastic, flexible, safety and protective coating system. It consists of a bottom layer of a cross-linked copolymer foam with closed cells having a specific gravity of approximately 50 kilograms per cubic meter and a 2-component poly-urethane resin having an elongation value at fracture of 900 % as a top layer. The maximum water retention of the foamed bottom layer is less than 1 % (about 0,6 %) by volume when immersed in water. The coating system gives safety and hygiene in the different application possibilities, such like sports, fitness training, water recreation (e.g. surfaces of waterchutes and wild waterchutes, swimmingpools and the like) and industry (e.g. treat-tables, reservoirs for fruits and bottles and animal residences and the like). The coating can be applied in several manners.
Abstract:
Thin layered tapes for sealing textile seams against water entry wherein the first layer is a thermoplastic hot melt adhesive resin, the second layer consists of a microporous expanded polytetrafluoroethylene membrane whose pores are at least partly filled with a substantially transparent and colorless high melting or non-melting polyurethane adhesive. This adhesive binds the thermoplastic layer to the membrane, and optionally a third layer of very thin material to the second face of the membrane when the pores are essentially filled with adhesive. The thinness of the structures provides sealed seams with less bulk, good hand and drape and easier application. The compression and heating of the tape during application further reduces the reflectivity and increases the transparency of the tape on the sewn seam.
Abstract:
The present invention relates to a heat-insulating composite panel having a heat-insulating layer made of a rigid plastic foam between a surface member and a back member, characterized in that thermally expansible graphite is sandwiched between the surface member and/or the back member and the rigid plastic foam. This panel is particularly excellent in fire-proofing and refractory properties.
Abstract:
A laminated printing blanket having compressible and resilient properties, and a method for its production. The compressible characteristics are provided by disposing a compressibleintermediate layer (24) having voids (30), between a base ply (28) and a surface layer (20). The voids (30) in the intermediate layer (24) are produced by dispersing a blowing agent in an elastomer, sandwiching the elastomer which contains the blowing agent between two fabric layers (22, 26), and activating the blowing agent to produce voids. By activating the blowing agent before disposing the intermediate layer (24) between the base ply (28) and the surface layer (20), the gases from the blowing agent are prevented from migrating to the base ply (28) or to the surface layer (20).
Abstract:
A thin, flexible covering material which provides a heat and vapor barrier for walls or ceilings comprises a first layer of vinyl or cloth (fig. 2-A) on which a decorative design may be printed, a second layer of paper or cloth, (Fig. 2-B) a third layer of metal foil, (Fig, 2-D) and a fourth layer of paper or cloth, (Fig. 2-E) the layers being laminated together to form the covering material. Alternative embodiments include applications as floor coverings, rug underlays, wall sections, or window blinds. Optional layers of polymeric foam or wall board (Fig. 2-C) may be incorporated into the covering material for some applications.
Abstract:
Moisture permeable textile constructions (10) are disclosed. The construction (10) comprises a textile substrate (14); the face side of the construction (10) comprises a low energy surface (12); the reverse side of the construction may carry a primer (16) and an adhesive (18) that allows the construction to be securely attached to a support surface, yet may be readily removable without residue or damage to the support surface. The low energy surface (12) may be printed, patterned, or otherwise treated to provide decorative and/or functional characteristics, as desired, depending on the intended use of the construction. Various chemical additives such as stain release agents, biocides, etc. may be incorporated into the construction.
Abstract:
An expanded, memory molded, increased density, highly impact-resistant polystyrene construct, and method of making the construct. The construct is formed by molding pre-expanded non-equilibrated polystyrene beads to a first volume, cooling rapidly, and then compression molding to a final, smaller volume. The resultant constructs have increased density, and high impact strength without increase in embrittlement. The construct (L) may be multilayered with each layer (11, 12, 13) having a different density. Also, the construct has "memory" in the sense that it returns substantially to its original shape after impact.
Abstract:
The invention provides a laminated body, such as a door trim board capable of retaining a bonding effect for a long period of time by unitarily combining a base member and a skin member without forming the skin member in the shape of a sheet and without using a skin member bonding agent, and a laminated body manufacturing method by which a reduction in the quantity of materials to be used and the simplification of manufacturing steps are achieved. A porous base member (11) molded in the shape of a door trim board and a molten resin (12) melt which is supplied onto a surface of the porous base member (11) and which is to constitute a skin member are pressed between a pair of molds (31, 32), whereby at least an outer part of an inner portion of the porous base member (11) is impregnated with the molten resin (12) melt, which is hardened at the same time. In a door trim board thus obtained the resin forming the skin member (12) and the porous base member (11) are bonded together by an anchoring effect with a reliable strength thereof retained.
Abstract:
A laminate composed of at least two layers comprising a barrier base material and an ethylene copolymer layer containing carbon-to-carbon unsaturated bonds and optionally further a polyolefin composition layer; a heat-shrinking laminate film; and a laminate and a heat-shrinking foamed laminate film each further containing a foamed layer. The laminate is excellent in heat sealability and oil resistance, is optionally cross-linked dependent on the purpose of use, and is useful not only as a nonshrinking packaging material for chilled beef but also as a food packaging material for conventional sleeve or boiling packaging. Since the heat-shrinking laminate film contains an ethylene copolymer which can be crosss-linked efficiently, it can be cross-linked with an ionizing radiation under a milder condition in a shorter time than before, thus providing a high-performance laminate more economically and safely without causing the deterioration of the barrier base material. The laminate and heat-shrinking foamed laminate film containing the foamed layer are excellent in heat insulation, shock absorption and flexibility while retaining high barrier properties, heat sealability and high shrinkability.