摘要:
A stretch-formed container having a layer comprising a blend of an ethylene terephthalate type polyester resin and another material, characterized in that the layer comprising the blend has a dispersion structure composed of a continuous phase comprising the ethylene terephthalate type polyester resin and a dispersed phase comprising the other material and that at least the container body part has a tan δ maximum temperature of 115° C. or lower in a dynamic viscoelasticity examination. Due to the constitution, even when the mechanical stretching rate reaches a limit, strain hardening effectively occurs. Thus, a stretch-formed container of a polyester resin can be provided which has both of excellent heat resistance attributable to high-temperature stretching and a stretch balance attributable to strain hardening.
摘要:
A multi-layer structure for packaging formed by at least an inner layer, an outer layer and an intermediate layer, the intermediate layer having an islands-in-a-sea structure comprising a resin A constituting sea portions and a functional resin B constituting island portions, the sea portions occupying not more than 80% of the area of the intermediate layer in cross section, and the inner layer and the outer layer being resins having adhesiveness to said resin A. The adhesion among the layers is improved without providing any particular adhesive layers among the intermediate layer having a function such as gas barrier property and the inner and outer layers, and, besides, transparency is improved.
摘要:
There is here disclosed a plastic package (1) which has a thin-film layered structure (2) constituted of substances having different refractive indices and which is colored by an interference effect due to the thin-film layered structure (2). The plastic package is characterized in that, on a part of the surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged.
摘要:
A resion composition in which a coloring component comprising a polymer and having a regular configuration as a coloring principle is contained in a matrix resin, and a temperature at which the coloring component is decolored is higher than a temperature at which the matrix resin is processed. A packaging structure in which, on at least a portion of the surface of the packaging structure, portions which are different in optical characteristics from the surface are periodically arranged by use of a fibrous structure.
摘要:
Here is disclosed a method for generation of a molecular beam from a sample solution, comprising steps of operating a spray-in device to introduce the sample solution in atomized state into a spray chamber, impinging a suitable gas on the sample solution in atomized state or heating the sample solution in atomized state to generate solute molecules deprived of solvent molecules, and then ejecting these solute molecules through an orifice into a low air pressure chamber. The apparatus as well as the method according to the present invention enable to generate a molecular beam for a variety of molecules, particularly for the neutral molecules which can be decomposed by heating at a high temperature or those which can not be sublimated or vaporized even by heating at a high temperature, as long as the sample solutions are prepared. Due to the method as well as the apparatus according to the invention, it is possible to conduct the mass spectroscopy studies and also other spectroscopic analyses about the molecules and the molecular clusters containing in the molecular beam generated in this manner, for example, by irradiating laser beams. It is possible to also possible to deposit the molecules on a substrate.
摘要:
In a method for decorating a plastic package, on at least a part of a surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged to decorate the surface.
摘要:
An ethylene terephthalate type polyester resin for forming containers, having an intrinsic viscosity in a range of 0.80 to 0.90 dL/g, containing copolymerizable components other than the ethylene glycol and terephthalic acid in an amount of less than 1.5 mol %, containing monohydroxyethyl terephthalate and bishydroxyethyl terephthalate in a total amount of less than 0.005% by weight, and having a heat of fusion of not more than 50 J/g and a crystallinity of less than 60%.The ethylene terephthalate type polyester resin has a high intrinsic viscosity, excellent stretch formability and excellent melting property.
摘要:
A biaxially stretch blow-molded container having a layer of a trimethylene naphthalate type polyester resin, wherein the layer of the trimethylene naphthalate type polyester resin in at least the container body portion satisfies either one or both of: (i) a Tc1 calorific value is not larger than 10 J/g in the DSC measurement; and (ii) tan δ maximum temperature≧90° C. and tan δ maximum value≦0.4 in the dynamic viscoelasticity measurement, the biaxially stretch blow-molded container effectively exhibiting excellent gas-barrier property possessed by the trimethylene naphthalate type polyester resin.
摘要:
Here is disclosed a method for generation of a molecular beam from a sample solution, comprising steps of operating a spray-in device to introduce the sample solution in atomized state into a spray chamber, impinging a suitable gas on the sample solution in atomized state or heating the sample solution in atomized state to generate solute molecules deprived of solvent molecules, and then ejecting these solute molecules through an orifice into a low air pressure chamber. The apparatus as well as the method according to the present invention enable to generate a molecular beam for a variety of molecules, particularly for the neutral molecules which can be decomposed by heating at a high temperature or those which can not be sublimated or vaporized even by heating at a high temperature, as long as the sample solutions are prepared. Due to the method as well as the apparatus according to the invention, it is possible to conduct the mass spectroscopy studies and also other spectroscopic analyses about the molecules and the molecular clusters containing in the molecular beam generated in this manner, for example, by irradiating laser beams. It is possible to also possible to deposit the molecules on a substrate.
摘要:
A multi-layer polyester container comprising inner and outer layers of a polyester resin and at least one intermediate layer of a functional resin or a functional resin composition, wherein a difference of tan δ of the inner polyester layer at 80° C. and 60° C. is 0.035 or less in the measurement of the dynamic viscoelasticity (DMS) thereof at 0.5 Hz. Even when the functional resin or the functional resin composition having a large draw stress is used as an intermediate layer, therefore, excellent transparency is obtained while effectively exhibiting the function such as barrier property possessed by the functional resin or the functional resin composition.