1032results about How to "Easy to tear" patented technology

A tamper-evident rigid plastic food container system wherein the outer periphery of the mating surfaces of the lid and tray are permanently bonded together after the food product has been placed in the tray, a set of perforated rows at an inner periphery, the interconnect of which needs to be torn into order to open the lid. Intentional, inadvertent or malicious ingress into the container can only be made by tearing at the perforations thereby evidencing the potential tampering and contamination of the packaging contents. The lid and tray edges may further include mechanical interference fits, including snap-fit grips that may be of the releaseably lockable kind to permit sealing, release and re-sealing multiple times without deterioration in reliability, and which can further prevent or minimize leakage of liquid food product.

A pouch of the present invention comprises a front and a rear walls and a narrow pouring portion, and at least one wall portion is partially protruded to an outward direction of the pouch to be provided with a bulge portion having a hollow structure at vicinity of the pouring portion. Alternatively, a cut line of the pouring portion is positioned based on a vertex of a vertical angle of an assumed right triangle which is drawn at the pouring portion by the predetermined regulations. A half-cut line as an opening aid may be provided to a position to be opened of the pouch, the half-cut line being formed so as to have a combination of a deep part and a shallow part and/or a combination of a wide part and a narrow part. The bulge portion may be formed by subjecting a preheated resin film to press molding with the use of a die comprising a cavity and a core, and then cooling the thus press-molded resin film while it is held in the die.

The invention relates to a spray polyurea high-performance waterproof paint which is characterized by comprising component A and component B, wherein the component A comprises semi-prepolymer formed by the reaction between 70-35 parts of polyisocyanate and 30-50 parts of polyether glycol, and 0-15 parts of diluent based on parts by weight; the component B comprises 50-70 parts of amine-terminated polyether, 20-40 parts of amine chain extender and 5-10 parts of filler; and the volume ratio between the component A and the component B is 1:1. Compared with the common spray polyurea high-performance waterproof paint, the spray polyurea high-performance waterproof paint has higher tensile strength, elongation at break, tearing strength and other physical properties, and not only is applicable to waterproof projects of common building projects, basic facilities and the like, but also is especially suitable for high-difficulty waterproof projects of large basic facility construction such as a high speed railway, a subway, a tunnel, water conservancy project and the like.

The present disclosure relates to catheterization systems and components thereof. In one embodiment of the present disclosure, a catheterization system is disclosed that includes a catheter including a body with proximal and distal ends and defining first and second lumens extending therethrough, and a stylet. The stylet includes first and second stylet portions each having proximal and distal end regions, wherein the distal end regions of the first and second stylet portions together define a tapered penetrating portion. The first and second stylet portions are configured and dimensioned to be slidably positioned within the first and second lumens of the catheter, respectively. The first and second stylet portions extend from the proximal end of the catheter and beyond the distal end of the catheter, and are independently movable in relation to each other to facilitate selective removal of the first stylet portion and/or the second stylet portion from the catheter.

A clam-shell container system can include first and second container pieces that are hingedly connected. The first container piece can include a perimeter and a hangable tab, the hangable tab having an opening configured to receive a rod. The hinge connection can be perforated, such that it breaks upon actuation of the hangable tab to open the container system. The second container piece can include a cutout in proximity to the hinge connection and the hangable tab. Accordingly, the cutout can provide clearance for the rotation of the hangable tab beyond the hinge connection. Further, the second container piece can have a perimeter having a shape substantially similar to the perimeter of the first container piece. The perimeters can form a substantial seal in combination.

A composite wear-resisting shoe sole is prepared from, by weight, 60-100 parts of natural rubber, 10-50 parts of styrene butadiene rubber, 5-20 parts of polar rubber, 10-60 parts of modified white carbon black, 1-10 parts of zinc oxide, 1-4 parts of accelerant, 0.1-0.5 part of antioxidant, 2.5-4.5 parts of active agent, 5-20 parts of filler and 1-10 parts of sulfur .The filler is tetrapod-like zinc oxide whiskers .According to the composite wear-resisting shoe sole, the natural rubber and a small amount of polar rubber are jointly used as main rubber materials, the white carbon black subjected to toluene diisocyanate graft modification is added to serve as a reinforcing material, the tetrapod-like zinc oxide whiskers of a highly regular structure are used as a filling frame, the accelerant, the composite antioxidant and the active agent are added in sequence, and the composite wear-resisting shoe sole with high slippery resistance and tear strength and a remarkably improved frictional coefficient is prepared.

Methods, apparatus and systems for producing cushioning material from sheet material. In some embodiments, the apparatus comprises horizontally aligned forming members having fins for use in pulling and processing sheet material. The sheet material can be perforated sheet material. A holder can be provided for holding sheet material in stock roll form, the holder having a cross-bar for producing resistance against the stock roll to dissipate momentum of the stock roll when the motor of the apparatus is stopped.

The invention relates to a preparation method of pure p-aramid paper. The preparation method of the pure p-aramid paper comprises the following steps of 1, respectively preparing p-aramid chopped fiber pulp, p-aramid fibrid pulp and p-aramid pulp, and mixing the p-aramid chopped fiber pulp, the p-aramid fibrid pulp and the p-aramid pulp, 2, approaching flows of the mixed pulp onto a net for molding, 3, carrying out squeezing and drying, and 4, carrying out high-temperature press-polish molding. The preparation method of the pure p-aramid paper has the advantages that p-aramid fibrids are utilized as bonding materials of the pure p-aramid paper so that interface affinity of fibers is improved and fiber paper mechanical properties of tensile strength, tearing strength and wear resistance are improved; p-aramid pulp has a high specific surface area so that a hydrogen bond binding capacity of fibers is improved and the pure p-aramid paper having high density, high stiffness and high strength is obtained; and in a preparation process, concentrated sulfuric acid is not needed so that the problems of equipment corrosion and dilute sulphuric acid recovery complexity are solved.

The invention relates to a disposable packaging item capable of being sterilised and/or depyrogenated. The invention in particular relates to the packaging of products and/or devices in the fields of medicine, pharmaceutics, chemistry, biology, food or electronics. The invention in particular relates to a disposable packaging item (1) at least partially produced with at least one thermoplastic film (10) that can withstand sterilisation and/or depyrogenation, said disposable packaging item (1) defining at least one inner enclosure (5) for receiving one or more elements (50) to be packaged, said inner enclosure (5) being under vacuum (40) and preferably sterile and/or depyrogenated, said packaging item (1) including one or more packaged elements (50).

The present invention relates to a plastic film obtained by (co)extrusion or by a multilayer extrusion process.

The purpose of the invention is to supply a plastic film having useful properties, in particular of thermal behaviour, adhesion, linear tearability, and having a reduced production cost.

This film contains lamellar particles based on at least one metal and/or at least one metal oxide. It is obtained by the extrusion of a raw material constituted entirely or partly by a ground material from at least one coated film comprising at least one polyester and/or polyolefin film and at least one coating film based on at least one metal and/or at least one metal oxide.

The invention also relates to methods of manufacture of the raw material of the plastic film and of the plastic film and uses of said film.

Application in the field of packaging, decoration and heat treatments.

A delivery system (114) for a self-expanding device (110) for placement in a bodily lumen, the system comprising a sheath (112) that confines the device to a radially compact delivery disposition until the device is to be released into the lumen, the system having an elongate pull element (118) to be pulled proximally from its proximal end, which pull element is arranged radially inside the sheath for pulling preferentially on a pull zone on the circumference of the distal end of the sheath, thereby to tear the sheath progressively along a tear line running the length of the sheath, starting at the distal end of the sheath, to release the device from the confining effect of the sheath, progressively, beginning at the distal end of the device and wherein the sheath is of polyethylene-terephthalate, cold drawn along its long axis, and in that the distal end of the sheath tapers inwardly to provide an inwardly tapered distal end of the system.

The present invention provides a dielectric optical fiber cable which is capable of being remotely detected while buried. Specifically, this invention incorporates a detectable and easily removable locating element which is attached to the optical fiber cable by a web defined by the jacket extending over both the optical fiber cable and the locating element. The web allows for the locating strand to be easily removed once separation of the locating element from the optical fiber cable is initiated. The web is designed to allow the initial tear to propagate into a precise longitudinal tear along a predetermined length of the optical fiber cable.

The invention discloses a method for preparing para aramid paper from para aramid fibrid. The method concretely comprises the steps of carrying out surface treatment, defibering and dispersion on para aramid chopped fibers; carrying out ultrasonic treatment and pulping treatment on the para aramid fibrid; mixing the treated para aramid chopped fibers and the treated para aramid fibrid; adding anionic polyacrylamide into the mixed fibers to obtain aramid fiber pulp; shaping the aramid fiber pulp on an inclined wire paper machine; dehydrating, squeezing and drying; carrying out pre-hot-pressing on the dried aramid base paper, and then carrying out hot pressing by a hot press to obtain the para aramid paper. After the method for preparing the para aramid paper from the para aramid fibrid is adopted, the tensile strength, the tearing strength, the breaking strength, the wear resistance and the dielectricity of the para aramid paper are remarkably improved, and the para aramid paper can be taken as a structural material, an insulating material or an electronic material and is relatively widely applied to the fields of transportation, electronics and electric power, aerospace and the like.

The present disclosure provides a tampon wrapper that is a polyethylene film tube having at least a first sealed end with a notch in the first sealed end, and a number of perforations extending from the notch along the axial length of the tampon wrapper. The wrapper is quiet, easy to open, and provides a sanitary method of storing a used applicator.

The invention relates to a high-intensity environment-friendly craft paper and a manufacturing method. Currently, the craft paper which is low in quantitation and low in wood pulp proportion, has high intensity, and is mainly made of secondary fiber is unavailable yet. The craft paper is characterized by consisting of a face layer, a core layer, a bottom layer, a front-side glue applying layer and a back-side glue applying layer; the sizing agent of the face layer is nature-color wood pulp; the sizing agent of the core layer is mid fiber and long fiber which are graded from the old corrugatedcontainer (OCC) secondary fiber; and the sizing agent of the bottom layer is short fiber which is graded from the OCC secondary fiber. The method for manufacturing the high-intensity environment-friendly craft paper comprises the steps of pulping, making glue and making paper, wherein the pulping comprises the steps of making the sizing agent of the face layer, making the sizing agent of the corelayer and making the sizing agent of the bottom layer. The craft paper is reasonable in structural design, low in quantitation, low in wood pulp proportion and high in intensity, and is mainly made of the secondary fiber. Moreover, the process is simple, the production cost is low, and the manufactured high-intensity environment-friendly craft paper has good quality.

The present invention relates to a method of manufacturing a release liner to be temporarily adhered to the surface of an adhesive. A single-layer or multi-layer film is obtained by impressing a plastic base liner substrate. At least one surface of the base liner substrate is coated with a release agent to form a tearable release liner. There is no fibrous debris along the edges when the release liner is torn apart.