B32B7/03

Sheet, heating element, and heating device

A sheet includes a pseudo-sheet structure including a plurality of linear-bodies with a volume resistivity R of from 1.0×10.sup.−7 Ωcm to 1.0×10.sup.−1 extending in one direction, aligned parallel to one another, and spaced apart from one another, satisfies the relation: L/D≥3, wherein D represents the diameter of the linear-bodies, and L represents the spacing between adjacent ones of the linear-bodies, and also satisfies the relation: (D.sup.2/R)×(1/L)≥0.003, wherein D represents the diameter of the linear-bodies, L represents the spacing between adjacent ones of the linear-bodies, R represents the volume resistivity of the linear-bodies, and D and L are in units of cm. A heating element and a heating device each include the sheet.

Sheet, heating element, and heating device

A sheet includes a pseudo-sheet structure including a plurality of linear-bodies with a volume resistivity R of from 1.0×10.sup.−7 Ωcm to 1.0×10.sup.−1 extending in one direction, aligned parallel to one another, and spaced apart from one another, satisfies the relation: L/D≥3, wherein D represents the diameter of the linear-bodies, and L represents the spacing between adjacent ones of the linear-bodies, and also satisfies the relation: (D.sup.2/R)×(1/L)≥0.003, wherein D represents the diameter of the linear-bodies, L represents the spacing between adjacent ones of the linear-bodies, R represents the volume resistivity of the linear-bodies, and D and L are in units of cm. A heating element and a heating device each include the sheet.

MULTILAYER MONOAXIALLY ORIENTED FILM
20220332100 · 2022-10-20 ·

The present invention is directed to a monoaxially oriented multilayer film suitable for shrink lidding applications.

FIBER-REINFORCED RESIN, INTEGRATED MOLDED ARTICLE AND METHOD FOR PRODUCING FIBER-REINFORCED RESIN

The present invention provides a fiber-reinforced resin which has excellent tensile shear joining strength and is able to be integrated with another structural member with high productivity by means of thermal welding, thereby being suitable as a structural material. The present invention is a fiber-reinforced resin which contains constituents (A), (B) and (C), while having a multilayer structure that is composed of a thermosetting resin layer that is formed of (B) a thermosetting resin, a thermoplastic resin layer that is formed of (C) a thermoplastic resin, and a mixed layer that is present between the thermoplastic resin layer and the thermosetting resin layer, while being obtained by mixing the thermoplastic resin (C) and the thermosetting resin (B), in such a manner that the thermoplastic resin layer is present in the surface. With respect to this fiber-reinforced resin, at least some of (A) reinforcing fibers are present in the mixed layer. (A) Reinforcing fibers (B) Thermosetting resin (C) Thermoplastic resin

FIBER-REINFORCED RESIN, INTEGRATED MOLDED ARTICLE AND METHOD FOR PRODUCING FIBER-REINFORCED RESIN

The present invention provides a fiber-reinforced resin which has excellent tensile shear joining strength and is able to be integrated with another structural member with high productivity by means of thermal welding, thereby being suitable as a structural material. The present invention is a fiber-reinforced resin which contains constituents (A), (B) and (C), while having a multilayer structure that is composed of a thermosetting resin layer that is formed of (B) a thermosetting resin, a thermoplastic resin layer that is formed of (C) a thermoplastic resin, and a mixed layer that is present between the thermoplastic resin layer and the thermosetting resin layer, while being obtained by mixing the thermoplastic resin (C) and the thermosetting resin (B), in such a manner that the thermoplastic resin layer is present in the surface. With respect to this fiber-reinforced resin, at least some of (A) reinforcing fibers are present in the mixed layer. (A) Reinforcing fibers (B) Thermosetting resin (C) Thermoplastic resin

WALLBOARD AND METHOD OF MAKING AND USING SAME
20220314582 · 2022-10-06 ·

The invention relates to a material board (1) which comprises a core (2) and a first cover layer (3) and a second cover layer (4), each of which is formed by a mixture (7, 8) formed by lignin-containing particles (5, 6) and binder, which mixture is designed to form a solid body structure in a chemical binding process. The aim is to provide a material panel, which, for ecological and economical reasons, comprises a high proportion of particles based on annual plants and still exhibits good mechanical properties. Another object of the invention can be considered that of ensuring that the system load is kept relatively low during the production process. Another object can be considered that of keeping the proportion of stock removal low. According to the invention, at least 70%, preferably at least 80%, most preferably at least 90% of the particles (5) associated with the mixture (7) of the core (2) are obtained from annual plants, and at least 70%, preferably at least 80%, most preferably at least 90% of the particles (6) associated with the mixtures (8) of the two cover layers (3, 4) are obtained from perennial plants. The invention further relates to the use of a material board and to a method for producing a material board. Finally, the invention relates to a system for producing a material board.

Biaxially-oriented polyethylene multilayer film with a matte surface

A biaxially-oriented polyethylene (BOPE) multilayer film comprises a skin layer with a matte surface and a core, the skin layer with a matte surface comprising, in weight percent (wt %) based upon the weight of the skin layer: (1) from 20 to 80 wt % of an ethylene-based polymer, and (2) from 80 to 20 wt % of a propylene-based polymer; each of the ethylene-based polymer and the propylene-based polymer having a storage modulus, with a difference between the storage modulus of the ethylene-based polymer and the propylene-based polymer of greater than 40 megaPascals (MPa) at 110° C., and greater than 18 MPa at 120° C.

Biaxially-oriented polyethylene multilayer film with a matte surface

A biaxially-oriented polyethylene (BOPE) multilayer film comprises a skin layer with a matte surface and a core, the skin layer with a matte surface comprising, in weight percent (wt %) based upon the weight of the skin layer: (1) from 20 to 80 wt % of an ethylene-based polymer, and (2) from 80 to 20 wt % of a propylene-based polymer; each of the ethylene-based polymer and the propylene-based polymer having a storage modulus, with a difference between the storage modulus of the ethylene-based polymer and the propylene-based polymer of greater than 40 megaPascals (MPa) at 110° C., and greater than 18 MPa at 120° C.

ASYMMETRIC FUNCTIONAL PANEL
20230140952 · 2023-05-11 · ·

The invention relates to a functional panel for receiving surface loads comprising a plurality of veneer layers that are arranged one on top of another and are connected together in a materially bonded manner, wherein a part of these veneer layers has an A-fibre direction, and another part of these veneer layers has a B-fibre direction oriented at more or less 90° to the A-fibre direction. The functional panel has a central plane defined substantially in the middle of the functional panel in the in the thickness direction. The cumulative thickness of the veneer layers with the A-fibre direction differs from the cumulative thickness of the veneer layers with the B-fibre direction on a first side of the central plane, and the cumulative thickness of the veneer layers with the A-fibre direction differs from the cumulative thickness of the veneer layers with the B-fibre direction on the second side located on the opposite from the first side of the central plane. As a result, the functional panel has an asymmetric structure in its thickness direction. The invention also relates to the use of a functional panel as a formwork shell for the formwork of a building part, and a method for producing the formwork of a building part with at least one functional panel.

ASYMMETRIC FUNCTIONAL PANEL
20230140952 · 2023-05-11 · ·

The invention relates to a functional panel for receiving surface loads comprising a plurality of veneer layers that are arranged one on top of another and are connected together in a materially bonded manner, wherein a part of these veneer layers has an A-fibre direction, and another part of these veneer layers has a B-fibre direction oriented at more or less 90° to the A-fibre direction. The functional panel has a central plane defined substantially in the middle of the functional panel in the in the thickness direction. The cumulative thickness of the veneer layers with the A-fibre direction differs from the cumulative thickness of the veneer layers with the B-fibre direction on a first side of the central plane, and the cumulative thickness of the veneer layers with the A-fibre direction differs from the cumulative thickness of the veneer layers with the B-fibre direction on the second side located on the opposite from the first side of the central plane. As a result, the functional panel has an asymmetric structure in its thickness direction. The invention also relates to the use of a functional panel as a formwork shell for the formwork of a building part, and a method for producing the formwork of a building part with at least one functional panel.