A resin part, wherein the resin part has an asymmetrical shape in a thickness direction, so that a portion in which an increase in internal temperature by heating is relatively quick is positioned closer to one end of the resin part in the thickness direction while a portion in which an increase in internal temperature by heating is relatively slow is positioned closer to the other end of the resin part in the thickness direction, wherein the resin part has an asymmetrical shape in a width direction, so that the portion in which the increase in internal temperature by heating is relatively quick is positioned closer to one end of the resin part in the width direction while a portion in which an increase in internal temperature by heating is relatively slow is positioned closer to the other end of the resin part in the width direction.

A medical device and a manufacturing method for such medical device having an assembly comprising: an elongated solid housing with an outer surface and a maximum outer diameter, at least one electrical contact area at the outer surface of the housing, and a processor encapsulated within the housing,
wherein the method comprises the following steps: providing the assembly and a tube consisting of a plastic and electrically insulating material, wherein an inner diameter of the tube is greater than the maximum outer diameter (108) of the assembly, accommodating the assembly within the tube such that at least one electrical contact area of the assembly is not covered, and applying a shrinking step to the tube such that the shrunken tube is firmly attached to the outer surface of the housing.

The manufacturing method is cheaper and less time consuming than state-of-the-art methods, and also better suitable for automation.

A protective textile sleeve and method of construction thereof is provided. The sleeve includes a seamless, tubular braided wall having a plurality of yarns braided with one another. A plurality of the yarns are high temperature, non-heat-shrinkable yarns and a plurality of the yarns are heat-shrinkable yarns, wherein the heat-shrinkable yarns are shrinkable at a temperature that does not cause the high temperature, non-heat-shrinkable yarns to shrink. The sleeve has a first length and first thickness upon being braided, and a second length that less than the first length and a second thickness that is greater than the first thickness upon being exposed to a single heat-treat process.

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:

[00001]$\begin{array}{cc}\mathrm{Determination}\mathrm{coefficient}={\left(\mathrm{correlation}\mathrm{coefficient}\right)}^2={\left[\frac{\left(\mathrm{covariance}\right)}{\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}X\right)\left(\mathrm{standard}\mathrm{deviation}\mathrm{of}Y\right)}\right]}^2& \left[\mathrm{Equation}1\right]\end{array}$

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 microcatheter comprising an inner layer, a strike layer and an outer layer and a braided skeleton located between the inner layer and the outer layer, wherein the inner layer is made of Polytetrafluoroethylene (PTFE) and has a thickness of 0.0015 inch or less, wherein the strike layer includes a polyether block amide and has a thickness of 0.001 inch or less, and wherein a distal portion of said outer layer is made of polycarbonate-based thermoplastic polyurethane having a shore of 90A or below.

The invention relates to a modification process for modifying a biaxially oriented pipe, comprising a) providing a biaxially oriented pipe made by stretching a tube made of a thermoplastic polymer composition in the axial direction and in the peripheral direction, b) placing an insert within an end portion of the pipe, wherein the outer periphery of the cross section of the insert substantially matches the inner periphery of the cross section of the pipe and c) heating the end portion such that the end portion axially shrinks while the inner periphery of the cross section of the end portion is substantially maintained, to obtain a modified biaxially oriented pipe with a thickened end portion.

The present disclosure provides a dual layer heat shrink tube having: an inner polymeric layer with a thickness t.sub.1 and an outer diameter D.sub.1; and an outer, expanded polymeric layer with a thickness t.sub.2′ and an outer diameter D.sub.2′ obtained by expanding a polymer tube from D.sub.2 to D.sub.2′ and t.sub.2 to t.sub.2′ at a selected temperature so that D.sub.2′−2(t.sub.2′)>D.sub.1, wherein a ring cut from a cross-section of the dual layer heat shrink tube, slit into a rectangle and gripped at cut ends by tension grips within a DMA, and subjected to a temperature sweep of 3° C./min at a frequency of 1 Hz from the onset of a melting endotherm of the inner polymeric layer to that of the outer, expanded polymeric layer is greater than 1° C. and less than 12° C. The disclosure further provides associated methods for preparing and using such tubes, as well as to products comprising such tubes.

A process of heat shrinking an article is provided. The process includes shaping a thermoplastic vulcanizate (TPV) into an article, the TPV having: a partially vulcanized rubber dispersed in a continuous thermoplastic phase, wherein more than 5 wt % of the rubber is extractable in boiling xylene, and wherein the thermoplastic phase comprises a thermoplastic resin having a Tm>110° C. and a propylene-based elastomer (PBE) having a Tm<110° C.; and heating the article to a temperature between about 100° C. and 250° C. to shrink the article.

A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.

A multilayer composite is disclosed comprising a heat shrinkable polymer layer and a nanofiber layer. Methods of forming the composite and uses thereof are also described.