400 results about "Peel force" patented technology

An optical cable, which is flame-retardant, and has excellent adhesion of the protective covering to the fiber cladding and uniform thickness of the fiber cladding, contains a polymer optical conductor containing a fiber core; a single-layer or multi-layer fiber cladding; an inner external layer which adheres to the fiber cladding with a peel force of at least 50 N; and an outer external layer which adheres to the inner external layer with a peel force of not more than 30 N. The inner external layer contains a molding composition having a first polyamide selected from a) PA 11, b) PA 12, c) PA 1012, d) PA 1212, e) a copolyamide of at least two of PA 11, PA 12, PA 1012 and PA 1212, said copolyamide containing not more than 30 mol % of a comonomer, and f) mixtures thereof. The first polyamide contains at least 50 mueq / g of amino end groups. The first molding composition has a zero-shear viscosity of from 400 to 6000 Pas. The outer external layer contains a second molding composition which has the following i)-iii): i) from 20 to 95% by weight of a second polyamide selected from a) PA 11, b) PA 12, c) PA 1012, d) PA 1212, e) a copolyamide of at least two of PA 11, PA 12, PA 1012 and PA 1212, said copolyamide containing not more than 30 mol % of a comonomer, f) a polyetheramide of at least one of a)-e), and g) mixtures thereof, ii) from 5 to 45% by weight of a flame retardant, and iii) from 0 to 60% by weight of an impact modifier.

An organic / inorganic composite separator includes (a) a polyolefin porous substrate having pores; and (b) a porous active layer containing a mixture of inorganic particles and a binder polymer, with which at least one surface of the polyolefin porous substrate is coated, wherein the porous active layer has a peeling force of 5 gf / cm or above, and a thermal shrinkage of the separator after being left alone at 15O DEG C for 1 hour is 50% or below in a machine direction (MD) or in a transverse direction (TD). This organic / inorganic composite separator solves the problem that inorganic particles in the porous active layer formed on the porous substrate are extracted during an assembly process of an electrochemical device, and also it may prevent an electric short circuit between cathode and anode even when the electrochemical device is overheated.

The invention provides an optical-use adhesive sheet excellent in adhesiveness under bending, twisting or distorting stress. The optical-use adhesive sheet has an adhesive layer having a storage elastic modulus at 80 DEG C of at least 2.0X10 4 Pa and a loss elastic modulus at 80 DEG C of at least 1.0X10 4 Pa, the optical-use adhesive sheet is characterized in that the adhesive sheet has a peel force, as measured in the L-shape peel test, of at least 0.16 MPa, and has a peel distance, as measured in the constant-load peel test, of at most 50 mm. In the L-shape peel test, an L-shaped stainless steel clamp is adhered with an acrylicresin plate through the adhesive sheet, the acrylicresin plate and the stainless steel clamp are processed for 15 minutes at 50 DEG C under 5 atm, and then, the stainless steel clamp is drawn along a direction vertical to a surface of the acrylicresin plate so as to test the peel force. In the constant-load peel test, a double-faced adhesive sheet is adhered on the acrylicresin plate, then, the acrylicresin plate and the double-faced adhesive sheet are processed for 10 minutes at 50 DEG C under 5 atm, and then, a load of 100gf is applied along the direction vertical to the surface of the acrylicresin plate on a tail end in a length direction of the adhesive sheet so as to test the peel distance of the adhesive sheet after 3 hours.

A process includes (i) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a mixture of a polyethylene and an ethylene / alpha-olefin copolymer and aging the resultant structure at 40 to 75° C. for 6 hours or more or (ii) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a linear ethylene-based resin in which the content of components eluted at 30° C. or lower measured by the temperature rising elution fractionation method is 3 to 30 wt % and aging the resultant structure at 55 to 75° C. for 6 hours or more, to thereby regulate the pressure-sensitive adhesive layer so as to have a peel force of 0.5 to 5 N / 50 mm when peeled from the release layer at an angle of 180° and a rate of 2 m / min together with the support base material.

Double-sided adhesive tape (fixer) which can be re-released without residue or destruction for hidden bonding on substrates that are to be bonded, with high peel strength, high shear strength and high tip-shear strength, characterized bya) an intermediate support which cleaves under the action of torsional forces, lever forces and / or peel forces,b) pressure-sensitive adhesive composition coated on both sides of the intermediate support, which composition can be released without residue or destruction by stretching in the direction of the bond plane.