What is provided is a heat-shrinkable film and a heat-shrinkable label that, when applied to a container in which the difference between the diameter of the body portion and the diameter of the mouth portion is large, sufficiently shrink in the mouth portion and do not easily allow the generation of a wrinkle or a sink mark in the mouth portion. The heat-shrinkable film contains polyester, a dicarboxylic acid component that constitutes the polyester contains 95 mol % or more of terephthalic acid, and a diol component that constitutes the polyester contains 50 mol % or more of ethylene glycol and 15 mol % or more of cyclohexanedimethanol. The shrinkage rate in the primary shrinkage direction when the heat-shrinkable film is immersed in hot water at 70 C. for 30 seconds is 20% or less, the shrinkage rate in the primary shrinkage direction when the heat-shrinkable film is immersed in hot water at 80 C. for 30 seconds is 45% to 65%, and the shrinkage rate in the primary shrinkage direction when the heat-shrinkable film is immersed in hot water at 98 C. for 30 seconds is 65% or more.

A polyolefin-based film comprising at least one layer permitting printing as a result of laser irradiation; wherein not less than 100 ppm but not greater than 3000 ppm of pigment permitting printing as a result of laser irradiation is present in all layers of the film; haze thereof is not less than 1% but not greater than 30%; and unevenness in thickness thereof in either a machine direction or a transverse direction is not less than 0.1% but not greater than 25%. An object is to provide a film capable of being printed in distinct fashion by a laser, that excels with respect to unevenness in thickness, and that is of high transparency, and at the same time provide packaging which employs such film and on which printing has been directly carried out.

A polyolefin-based film comprising at least one layer permitting printing as a result of laser irradiation; wherein not less than 100 ppm but not greater than 3000 ppm of pigment permitting printing as a result of laser irradiation is present in all layers of the film; haze thereof is not less than 1% but not greater than 30%; and unevenness in thickness thereof in either a machine direction or a transverse direction is not less than 0.1% but not greater than 25%. An object is to provide a film capable of being printed in distinct fashion by a laser, that excels with respect to unevenness in thickness, and that is of high transparency, and at the same time provide packaging which employs such film and on which printing has been directly carried out.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

Described is a peelable heat shrink tube composed of a fluororesin and having a determination coefficient calculated from [Equation 1] below using an elastic modulus ratio (%) of more than 0, but 0.90 or less: $\begin{array}{cc}\mathrm{Determination}\mathrm{coefficient}={\left(\mathrm{correlation}\mathrm{coefficient}\right)}^2={\left[\frac{\left(\mathrm{covariance}\right)}{\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}X\right)\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}Y\right)}\right]}^2& \left[\mathrm{Equation}1\right]\end{array}$
where X, Y and covariance represent the following: X: Proportion of the position of each point, where the elastic modulus was measured, from the interior of the tube Y: Elastic modulus ratio in each region Covariance: Average of the product of deviations of X and Y.

Described is a peelable heat shrink tube composed of a fluororesin and having a determination coefficient calculated from [Equation 1] below using an elastic modulus ratio (%) of more than 0, but 0.90 or less: $\begin{array}{cc}\mathrm{Determination}\mathrm{coefficient}={\left(\mathrm{correlation}\mathrm{coefficient}\right)}^2={\left[\frac{\left(\mathrm{covariance}\right)}{\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}X\right)\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}Y\right)}\right]}^2& \left[\mathrm{Equation}1\right]\end{array}$
where X, Y and covariance represent the following: X: Proportion of the position of each point, where the elastic modulus was measured, from the interior of the tube Y: Elastic modulus ratio in each region Covariance: Average of the product of deviations of X and Y.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

A multilayer film containing 80 mass % or more of a polyolefin-based resin. A thermally shrinkable multilayer film according to an embodiment of the present invention is a multilayer film including at least three layers including an outer surface layer (a) containing a polyolefin-based resin, an intermediate layer (b) containing a gas-barrier resin, and an inner surface layer (c) containing a polyolefin-based resin, in which at least one layer of the multilayer film contains a cyclic olefin copolymer; when a total mass of the multilayer film is 100 mass %, a proportion of a mass of the polyolefin-based resin in the multilayer film is 80 mass % or more, and a proportion of a mass of the cyclic olefin copolymer in the multilayer film is 15 mass % or more.

A multilayer film containing 80 mass % or more of a polyolefin-based resin. A thermally shrinkable multilayer film according to an embodiment of the present invention is a multilayer film including at least three layers including an outer surface layer (a) containing a polyolefin-based resin, an intermediate layer (b) containing a gas-barrier resin, and an inner surface layer (c) containing a polyolefin-based resin, in which at least one layer of the multilayer film contains a cyclic olefin copolymer; when a total mass of the multilayer film is 100 mass %, a proportion of a mass of the polyolefin-based resin in the multilayer film is 80 mass % or more, and a proportion of a mass of the cyclic olefin copolymer in the multilayer film is 15 mass % or more.

Provided are a hose excelling in a lightweight property and in fatigue fracture resistance, a method for manufacturing the hose, and a hydraulic pump. The hose includes a tube, an interior of the tube being hollow, continuous carbon fibers and/or continuous glass fibers wound around an outer circumference of the tube, and a thermosetting resin present external to the tube. The thermosetting resin has an elastic modulus from 0.5 to 10 MPa, and the continuous carbon fibers and/or continuous glass fibers are impregnated with at least a part of the thermosetting resin. The elastic modulus of the thermosetting resin is a numeric value determined by: heating the thermosetting resin for 2 hours at a curing temperature of the thermosetting resin; then subjecting the thermosetting resin to thermoregulation for two weeks under a condition of a temperature of 23 C. and a relative humidity of 55%; and then performing a measurement in accordance with JIS K7161:2019.