The present disclosure provides a multilayered polymeric film for covering an agricultural structure or greenhouse, wherein the film contains adjacent layers that are capable of delamination from one another.

A cover member for an in-store greenhouse is disclosed, with which radiation exiting the in-store greenhouse can be influenced or modified, so that outgoing total radiation has a white color on the Planck curve.

Methods for fumigating soil include applying over fumigant-treated soil a multilayer polymeric film to form a vapor barrier between the fumigant-treated soil and the atmosphere to at least partially contain the fumigant. The multilayer film includes at least one barrier layer comprising at least one vinylidene chloride polymer and protecting layers on each side of the barrier layer. The multilayer film preferably has at least one UV protecting layer and optionally at least one reflective layer.

This invention relates to a polymeric composition suitable for greenhouse film applications, and greenhouse films made therefrom. The polymeric composition suitable for greenhouse film applications according to the present invention comprises a) 50 to 99 percent by weight of a continuous polymeric phase comprising a polymer selected from the group consisting of a polyolefin, a polyolefin copolymer, an ethylene propylene copolymer with an acrylic ester, an ethylene or propylene copolymer with a vinyl acetate, and combinations thereof; and b) 1 to 50 percent by weight of polymeric particles having an average particle diameter of 0.5 to 10 μm; a refractive index from 1.474 to 1.545; an average particle hardness from 1.2367E+10 N/m.sup.2 to 8.4617E+10 N/m.sup.2; and at least 60% polymerized acrylic monomer units.

The present invention relates to a film for use in plasticulture that comprises at least a first layer of a thermoplastic polymer composition, said thermoplastic polymer composition comprising a linear low-density polyethylene having a melt index (MI) measured according to ASTM D1238 at a temperature of 190° C. and a load of 2.16 kg of higher than 1.0 g/10 min and at most 10.0 g/10 min, whereby the film has an RMS roughness measured by AFM according to point 4.2.2 of ISO 4287:1997 of lower than 40 nm, and/or an average roughness measured by AFM according to point 4.2.1 of ISO 4287:1997 of lower than 30 nm.

The present invention relates to an air-permeable laminate insulation material, and more specifically, to an air-permeable laminate insulation material including: an insulation material layer; an aluminum coating layer formed on one or both surfaces of the insulation material layer; a non-woven fabric layer formed on the aluminum coating layer; and a polyolefin composite layer which is made from a mixture of polyolefin and inorganic particles and laminated on top of the non-woven fabric layer.

The invention discloses environment-controlling fibers, method manufacturing the same and fabrics using the same, which adopts polyolefin material, optoelectronic material, thermoelectric material, piezoelectric material and catalyst material, to make fibers and fabric by melting, mixing, drawing and weaving. The fabrics are used in all kinds of environmental control products or for organic agriculture. To use green energy such as solar light energy, solar thermal energy, wind energy, hydro energy, geothermal energy and other renewable energy to stimulate the function of the special material within the fibers, so that the fabrics can remove pollutants in the environment and produce self-purification function to achieve the purpose of improving the environmental conditions or promote plant growth.

Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO.sub.2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 μm.

A multi-layer bioactive and biodegradable film. The multi-layer film includes one or more bioactive compounds or microorganisms for promoting growth and health of a plant, the bioactive compounds or microorganisms contained between layers of the film, wherein each one of the layers comprises about 60% to about 75% (m/m) polyhydroxyalkanoate. The bioactive compounds or microorganisms may include any one of or a combination of: a metabolite, an anti-microbial compound, an enzyme, a live microorganism, a fertilizer, a plant growth hormone, a preservative, a pesticide or an herbicide. Release of one or more bioactive compounds may be achieved in a timed and controlled manner.

A self-watering portable greenhouse is disclosed having a tubular frame constructed of light-weight, water-tight tubular members which serves as a combined structural skeleton for external walls, a platform for plant containers, and a reservoir for liquid nutrients provided to plants in plant containers by self-watering through a wick connecting the reservoir and the plant containers.