29 results about "Peel force" patented technology

The peeling force estimation method, for estimating peeling force in peeling a test film from an adherend surface by pulling one end of the test film that has separated from the adherend surface, where the test film is in a state of being attached to the adherend surface along a surface length direction of the adherend surface, includes: actually measuring the peeling force at a predetermined peeling angle (hereinafter, referred to as an actual measurement angle) using a peeling test apparatus to acquire an actual measured value of the peeling force, the peeling angle being defined as an angle formed between the test film and the adherend surface; and calculating the peeling force at a peeling angle other than the actual measurement angle using the actual measured value and a predetermined calculation formula representing a relationship between the peeling angle and the peeling force.

Provided is a sheet for an outer package configured to store a power storage element in a power storage device, the sheet for an outer package including a non-porous resin sheet, wherein the sheet for an outer package has a peel force F of 1.5 N / 10 mm or more, which is determined by the following evaluation method. The sheet for an outer package is suitable for the suppression of the swelling of a power storage device.—Evaluation Method— A rectangular test piece measuring 10 mm wide by 100 mm or more long, which is obtained by joining the sheet for an outer package serving as an evaluation object and a polypropylene sheet to each other through hot pressing, is subjected to a tear-off test in which the sheet for an outer package is torn off the polypropylene sheet at a peel rate of 300 mm / min in a 180° direction, and a 180° tear-off peel force thus measured is defined as the peel force F.

This invention provides a method for evaluating the adhesive strength of a center pad, a vulcanizing mold, and a metal sheet with defined holes. The method for evaluating the adhesive strength of the center pad includes: preheating a vulcanizing mold for pre-vulcanized peel test strips and a pressure-holding rubber sheet and a square-shaped pressure-filling mold for final peel test samples; preparing and vulcanizing pre-vulcanized peel test strips; preparing and vulcanizing final peel test samples; and performing peel tests on the final peel test samples to obtain their average peel force. The final peel test sample is formed by the final vulcanization of a preliminary peel test sample. The preliminary peel test sample is formed by sequentially bonding a pre-vulcanized peel test strip after peeling off a high-temperature pad, a metal sheet with defined holes, a center pad strip to be evaluated after peeling off a polyethylene film, and another pre-vulcanized peel test strip after peeling off a high-temperature pad. This method solves the problem of existing technologies lacking effective testing and evaluation methods for the peel strength of center pads.

To provide a peeling force estimation method and related others capable of estimating peeling force at various peeling angles using a simple method.SOLUTION: A peeling force estimation method estimates peeling force in peeling a test film from an adherend surface by pulling one end of the test film that has separated from the adherend surface, where the test film is in a state of being attached to the adherend surface along a surface length direction of the adherend surface. The peeling force estimation method includes: a step S1 of measuring the peeling force at a predetermined peeling angle (hereinafter, referred to as an actual measured angle) using a peel test apparatus to acquire an actual measured value of the peeling force, the peeling angle being defined as an angle formed between the test film and the adherend surface; and a step S3 of calculating the peeling force at a peeling angle other than the actual measured angle using the actual measured value and a predetermined calculation formula representing a relation between the peeling angle and the peeling force.SELECTED DRAWING: Figure 7

The invention relates to the technical field of adhesive product production, and discloses a movable adhesive foam production process which comprises the following steps: step 1, pretreating a base material; 2, preparing a glue solution; step 3, a gluing process; step 4, performing segmented drying; step 5, compounding and pressing; step 6, surface texture treatment; the stripping force of the removable glue foam produced through the method is only 0.1-0.3 N / cm, the removable glue foam can be easily torn down manually without the help of tools, and a base material is free of deformation and breakage in the stripping process; after the formula of the adhesive layer is optimized, the cohesive force is moderate, the adhesive layer is completely separated from an adhered object during stripping, no adhesive residue exists, and the cleaning cost is zero; the base material and the adhesive layer are stably combined, the repeated pasting frequency is more than or equal to 5 times, the adhesion performance is not obviously reduced, and the application scene is wide; the production process is simple and can be realized by adopting conventional coating and drying equipment, the production cost is basically equal to that of a traditional process, and industrial popularization is easy.

The present application belongs to the technical field of adhesive tape adhesion detection, and particularly relates to an adhesive tape initial adhesion and peeling force integrated testing device and testing method. The adhesive tape initial adhesion and peeling force integrated testing device comprises a telescopic mechanism, a sliding plate and a tension machine arranged on a base plate. The initial adhesion testing method comprises turning the test plate according to the test angle, and the initial adhesion is tested by the rolling of the ball on the adhesive surface of the adhesive tape on the test plate. The peeling force testing method comprises adjusting the angle of the adhesive tape from 90° to 180° by the two semicircular sliding grooves and the test plate, and the peeling force is tested by the combined movement of the tension machine and the sliding plate. The present application has the advantages of convenient operation, integration of initial adhesion and peeling force testing, expansion of the peeling force testing range and reduction of the testing cost.

The present invention relates to an adhesive sheet having a base layer, an adhesive layer X disposed on one side of the base layer, and an adhesive layer Y disposed on the other side of the base layer, wherein the peeling force when the adhesive layer X is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is A, and the peeling force when the adhesive layer Y is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is B, with A / B = 0.5 to 2, and the peeling force when the adhesive layer X is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is C, and the peeling force when the adhesive layer Y is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is D, with C / D = 0.002 to 0.2.

[Problem] A first purpose of the present invention is to provide a curable organopolysiloxane composition that can provide, to a base material, a release layer that exhibits a low release force when being released from an adhesive layer both at a low speed and a high speed, and that can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release. Further, a second purpose of the present invention is to provide a curable organopolysiloxane composition that can provide a release layer which can be favorably released from an adhesive tape with a low release force both during low speed release and high speed release, and in which the phenomenon of being heavily releasable due to exposure to the atmosphere is favorably suppressed, in other words, which has excellent exposure resistance. [Solution] This curable organopolysiloxane composition comprises the following components (A)-(C). (A) An alkenyl group-containing organopolysiloxane represented by average composition formula (1): 100 parts by mass (in the formula, each R1 independently represents an alkenyl group having 3-20 carbon atoms, R2 represents a linking group which is a divalent hydrocarbon group having 1-10 carbon atoms, and each R3 independently represents a group selected from substituted or unsubstituted monovalent hydrocarbon groups having 1-20 carbon atoms, alkoxy groups having 1-20 carbon atoms, halogenated alkyl groups having 1-10 carbon atoms, organic groups having a hydroxyl group, and organic groups having an acyloxy group, and a, b, c, d, e, f, and g satisfy a≥0, b≥0, c≥0, d≥0, e≥0, f≥0, and g≥0, a+c+e equals 1 or more, and satisfy 2≤a+b+c+d+e+f+g≤15000). (B) An organohydrogen polysiloxane having an average of 2 or more silicon atom-bonded hydrogen atoms (Si-H groups) per molecule: an amount equivalent to 0.5-10 times the mole number of Si-H groups in component (B) with respect to the mole number of alkenyl gr

The utility model discloses equipment for measuring the shear strength of a material and the stripping force of a coating. The equipment comprises a rack, the test board is arranged on the rack; the scraper knife is arranged on the rack and can move in the up-down direction and the front-back direction relative to the rack; the Z-axis driving mechanism is arranged on the rack and drives the scraper knife to move up and down relative to the rack; the Y-axis driving mechanism is arranged on the rack and drives the scraper knife to move in the front-back direction relative to the rack; the Z-axis direction force sensor is used for detecting the stress of the scraper knife in the vertical direction; the Y-axis direction force sensor is used for detecting the stress of the scraper knife in the front-back direction; the Z-axis direction displacement sensor is used for detecting the displacement of the scraper knife in the vertical direction; and the Y-axis direction displacement sensor is used for detecting the displacement of the scraper knife in the front-back direction. According to the utility model, the test process is convenient, the test precision is high, the test data repeatability is good, the test result can be reproduced, and the test efficiency is high.

The present disclosure provides adhesive mounting articles that can be removed from surfaces without damage by having reduced contribution of a hardgood to the peel force generated by the adhesive article during removal. In some instances, this can be accomplished by a hardgood that is flexible in a peel direction and rigid in a weight hanging direction. Such hardgoods may include a plurality of minimally connected body segments arranged about the transverse axis of the hardgood body.

The present invention relates to an adhesive sheet having a base layer and an adhesive layer disposed on at least one side of the base layer, wherein the peeling force when the adhesive layer is peeled off at 23°C in a 180° direction at a tensile speed of 300 mm / min is A, and the peeling force when the adhesive layer is heated at 80°C for 5 minutes and peeled off at 80°C in a 180° direction at a tensile speed of 300 mm / min is B, and the value calculated by (AB) / A is 90% or more. The adhesive sheet of the present invention has excellent tackiness at room temperature and can be easily peeled off at high temperatures without causing deformation or damage to the adherend.

The present disclosure provides an adhesive composition and a surface protective film including the same, which have low low-speed and high-speed peel forces and a high residual adhesion rate.

The invention discloses a double-sided peelable adhesive tape and a curing process control system and method thereof, and belongs to the technical field of adhesive tape curing equipment control, and the double-sided peelable adhesive tape comprises a UV irradiation adjustment module, a curing process continuous execution judgment module, a reaction sufficiency evaluation module and a curing strategy determination module. According to the method, the curing uniformity inside and outside the adhesive layer can be analyzed through the UV penetration consistency factor, the energy distribution inside and outside the adhesive layer is optimized in combination with the long-wavelength UV light internal supplementary curing and multi-band irradiation process, and meanwhile closed-loop control of physical energy regulation and chemical reaction verification is formed by evaluating the reaction sufficiency of the bonding interface, so that the curing uniformity of the adhesive layer is improved. And the problems of peeling surface tearing, residual adhesive accumulation, peeling force fluctuation and the like caused by non-uniform curing are avoided.

The utility model belongs to the field of compression rollers, particularly relates to a compression roller for producing an ultra-transparent high-stripping-force adhesive tape, and aims to solve the problems that when the existing compression roller is used, due to a coil spring arranged on a driven roller shaft, the stress of the adhesive tape is gradually increased in the process of winding the adhesive tape by a driving roller shaft, the adhesive tape is easily damaged, the quality of the adhesive tape is influenced, and the service life of the adhesive tape is prolonged. In the prior art, the defects of complex structure and large mechanical energy consumption exist, and the following scheme is provided for improvement: the device comprises a bottom plate, a transmission mechanism, a rolling mechanism and an ultra-transparent high-stripping-force adhesive tape; and two supporting plates are arranged on the bottom plate. According to the utility model, through the cooperation of all the components, the problems that the adhesive tape is easily damaged and the quality of the adhesive tape is influenced due to the fact that the stress of the adhesive tape is gradually increased in the process of winding the adhesive tape by the driving roll shaft due to a coil spring arranged on the driven roll shaft in the prior art are solved; and the effect of rolling the ultra-transparent high-stripping-force adhesive tape for multiple times can be achieved.

This invention relates to a feeding method for the adhesion, adsorption, and dynamic balance peeling of thin-layer products, comprising the following steps: S1, adhesion and adsorption; S2, feeding of the thin-layer product. Based on the synchronous outward or inward movement of two adhesive portions to form a change in the position of the adhesive portions, the invention synchronously changes the size of the two peeling angles opposite each other. This not only enables the smooth matching and adhesion of the self-receiving adhesive surface to the thin-layer product for adhesion and receptacle, but also allows the peeling forces formed by the two peeling angles to cancel each other out, thus maintaining the thin-layer product in a dynamic balance state and gradually detaching from the receptacle adhesive surface to complete peeling and feeding. This reduces the deformation rate, wrinkling rate, or mis-receiving rate of interlayers caused by the receptacle and unloading of the thin-layer product.

The utility model discloses a clamp for cable stripping force detection, which belongs to the technical field of cable experiment equipment and comprises a clamp, the clamp comprises a stretching assembly and a fixing assembly, and the stretching assembly comprises a stretching base body, a rotating handle, a fixing guide shaft and a threaded clamping block; the fixing assembly comprises a sphere fixing ejector pin, a clamping block and an ejector pin base. A groove is formed in the middle of the stretching base body, the fixed guide shaft is arranged in the groove in a penetrating mode through threads, the rotary handle is fixed to one side of the fixed guide shaft, and the threaded clamping block is arranged in the groove and connected with the fixed guide shaft. And the sphere fixing ejector pin can be matched with the clamping block to fix the cable in the ejector pin base. According to the utility model, the clamp can clamp the inner core of the cable; the tensile machine is connected with the stretching assembly and the fixing assembly, the stretching assembly and the fixing assembly are pulled to move in opposite directions, the cable is stripped, and force generated by the tensile machine is recorded.

A method for disassembling a joint that can also be applied to the disassembly of joints containing components with low hydrophilicity, and simultaneously achieves both joint reliability and ease of disassembly, is provided. The method includes an adhesive sheet having a first adhesive surface and a first component bonded to the first adhesive surface. The method comprises: immersing the joint in a peeling solution primarily composed of a low alcohol having 1 to 5 carbon atoms; and disassembling the joint after immersion. In a peel test conducted using a stainless steel sheet as the adherend, the reduction rate R of the ethanol peel force N1 [N / 20mm] relative to the typical peel force N0 [N / 20mm] at the first measurement of the adhesive sheet is... A The percentage is over 70%, and the average peel force N0 in the second measurement is relative to the average peel force N0 [N / 20mm] in the first measurement. S [N / 20mm] reduction rate R B It is below 30%.

An automated device for determining the peel force to peel a lidding foil off of a top surface of a primary packaging shell comprises:a shell holder for holding the primary packaging shell to the top surface of which the lidding foil is sealed;a foil lifter for lifting a non-sealed end portion of the lidding foil up from the planar top surface of the primary packaging shell held by the shell holder;a foil gripper for grasping the lifted non-sealed end portion of the lidding foil;a foil peeler for peeling the sealed lidding foil with the lifted non-sealed end portion grasped by the foil gripper off of the planar top surface of the primary packaging; anda force sensor for determining the force required to peel the lidding foil off of the top surface of the primary packaging shell.

The invention discloses a die cutting material utilization rate improving structure based on asynchronous attachment and a process method. The die cutting material utilization rate improving structure comprises a base layer, a composite function layer and a shielding layer. The base layer is an antistatic single-sided adhesive tape, and the composite functional layer is precisely fixed on the adhesive surface of the base layer in an asynchronous fitting manner; aiming at a product with a multi-layer composite structure including an antistatic protective film, a copper foil adhesive tape, foam, grid exhaust glue and the like, through accurate asynchronous lamination control and performance parameter matching (such as antistatic performance, stripping force, thickness and the like) of each layer of material, the utilization rate is improved, meanwhile, the synergistic effect of each functional layer is ensured, and the product quality is improved. And the comprehensive properties such as antistatic property, viscosity and peel strength of the product are ensured to reach the standard.

The purpose of the present invention is to provide an adhesive tape having excellent barrier properties and L-shaped bending adhesion. Another purpose of the present invention is to provide a method for manufacturing a hard disk drive having excellent sealing properties even when a case is sealed from outside by using the adhesive tape. In addition, an object of the present invention is to provide a hard disk drive sealing structure that is sufficiently sealed even when the case is sealed from the outside of the case. The present invention relates to an adhesive tape having a water vapor transmission rate of 7.5 g / (m < 2 > day) or less at 40 DEG C and 90% RH, a flexural rigidity of 1.0 N mm < 2 > or less at 25 DEG C at a bending width of 2.0 mm in at least one of the MD direction and the TD direction, and a 180 DEG peel force of 5.0 N / 25 mm or more with respect to SUS at 23 DEG C.

The present application relates to a kind of carbon-coated aluminum foil coating peeling force detection methods based on brightness after adhesive tape pasting and peeling, belong to battery current collector performance detection technical field.The method is by establishing the corresponding relationship curve of brightness value of carbon layer after pasting adhesive tape and peeling and coating peeling force in advance, only needs to measure the brightness of adhesive tape after pasting adhesive tape and peeling of the sample to be measured in subsequent actual detection, accurate measurement of peeling force can be completed by comparing relationship curve, measurement process does not need precision equipment, it is simple and easy to operate, detection speed is fast, result is objective and accurate, and can satisfy the immediate batch sampling demand of industrial field, to realize the efficient and accurate measurement of carbon-coated aluminum foil coating quality.

The present invention addresses the problem of providing a polyolefin film in which zipping and poor adhesion at various operating speeds are suppressed. This problem is solved by a polyolefin film containing a polyolefin resin, wherein the peel force of at least one surface measured by a 180° peel test is 1.00-4.00 N / 25 mm at a peel rate of 300 mm / minute, 1.60-4.00 N / 25 mm at a peel rate of 1000 mm / minute, and 2.30-4.00 N / 25 mm at a peel rate of 2500 mm / minute.

The invention relates to a dry method binder dispersion consistency evaluation method in the technical field of lithium batteries. The method comprises the following steps: S1, carrying out a stripping test on a to-be-tested sample to obtain a stripping force test value ai; the sample to be detected contains a dry method binder; s2, calculating average peel strength according to the peel strength test value ai; S3, calculating a peel strength standard deviation S and a variable coefficient CV, and judging the dispersion uniformity of the adhesive according to the variable coefficient CV. According to the present invention, the peeling strength test is performed on the to-be-tested sample to obtain the peeling strength curve, the variable coefficient CV value of the fluctuating data on the peeling strength curve is calculated, and the smaller the variable coefficient CV value is, the smaller the dispersion degree of the peeling curve is, such that the better the dispersion consistency of the binder is.

This utility model provides a clamping assembly for testing the peel force of optical fiber coatings. It relates to the field of material adhesion testing technology. The clamping assembly includes a single-column tensile testing machine. A lower clamp and an upper clamp are fixedly mounted on the single-column tensile testing machine. A mounting block is fitted onto the lower clamp. Two support frames are fixedly mounted between the inner walls of both sides of the mounting block, and both support frames are in contact with the lower clamp. Two rectangular blocks are fixedly mounted on one side of the mounting block. A threaded sleeve is rotatably mounted between the two rectangular blocks. Two threaded rods are threaded onto the threaded sleeve. Connecting arms are fixedly mounted at the ends of the two threaded rods that are far apart from each other. Adapter blocks are fixedly mounted on the tops of the two connecting arms. This utility model has the advantages of being able to calibrate the center lines of the lower clamp and the upper clamp, reducing coaxiality errors between them, and being quick and convenient to operate.

To provide a laminate having a release layer having both excellent light peelability and peeling antistatic property.SOLUTION: A laminate has a release layer containing a resin having fluorine at a side chain, on at least one surface of a base material film, wherein peeling force of the release layer under the following condition α is 20 mN / cm or less, and an absolute value of peeling electrification of the release layer under the following condition β is 430 V or less. (Condition α) Peeling force when a silicone-based adhesive layer with a thickness of 5 μm is formed on the surface of the film, the release layer is stuck onto the silicone-based adhesive layer and is cut out in a width of 5 cm and a length 10 cm and is left at 23°C for 24 hours, and then the release layer is peeled from the silicone-based adhesive layer at 180° under the condition of tensile speed of 5 m / min using a peeling testing machine. (Condition β) Surface potential is measured from a position which is 1 cm apart from a peeling surface of a central position of the silicone-based adhesive layer by a potential measuring apparatus at the time of peeling under the condition α, and the measured surface potential is defined as peeling electrification.SELECTED DRAWING: None

The application provides a coated diaphragm coating lateral peeling force test method, which tests the sum of the longitudinal peeling force and the lateral peeling force of the coated diaphragm coating and the longitudinal peeling force of the coating, subtracts the longitudinal peeling force from the sum of the lateral peeling force and the longitudinal peeling force, and obtains the lateral peeling force of the coating. The application provides a test method for the lateral peeling force of the coating, which provides technical support for evaluating the powder dropping and cracking of the coating.

The invention relates to the technical field of plastic-coated wire performance testing, in particular to plastic-coated wire coating layer stripping force testing equipment which comprises a testing table and a clamping jaw driving mechanism arranged on the testing table and used for dragging a plastic-coated wire for testing. The hydraulic clamping jaw clamps one end of the plastic-coated wire, the straight plate can be driven by the driving mechanism to move, the stripping knife is extruded towards the middle through mutual cooperation of the round rod, the U-shaped groove and the inclined groove, the stripping knife is inserted into a coating layer of the plastic-coated wire, and then the coating layer at one end of the plastic-coated wire can be directly stripped off along with continuous movement of the straight plate. And then an L-shaped push plate pushes a bottom rod to drive a hydraulic clamping jaw to move, the plastic-coated wire penetrates through a stripping mold to be inserted into a clamping jaw driving mechanism, automatic feeding of the device is achieved, a tester does not need to strip the end of the plastic-coated wire through stripping pliers, and the convenience performance of the device is greatly improved.

An automated device for determining the peel force to peel a lidding foil off of a top surface of a primary packaging shell comprises: - a shell holder for holding the primary packaging shell to the top surface of which the lidding foil is sealed; - a foil lifter for lifting a non-sealed end portion of the lidding foil up from the planar top surface of the primary packaging shell held by the shell holder; - a foil gripper for grasping the lifted non-sealed end portion of the lidding foil; - a foil peeler for peeling the sealed lidding foil with the lifted non-sealed end portion grasped by the foil gripper off of the planar top surface of the primary packaging; and - a force sensor for determining the force required to peel the lidding foil off of the top surface of the primary packaging shell.

The invention relates to a pressure-sensitive adhesive for pasting a mica plate as well as a preparation method and application thereof, the pressure-sensitive adhesive for pasting the mica plate comprises glue, and the glue comprises the following raw material components in parts by mass: 90-95 parts of a soft monomer; 6-10 parts of a functional monomer; 0.8-0.9 part of an initiator and a solvent, so that the solid content of the glue is 40%-50%; comprising 10-12 parts by mass of low softening point resin and 0.01-0.02 part by mass of a curing agent, based on 100 parts by mass of the glue, the use amount of the low softening point resin is 10-12 parts by mass, and the use amount of the curing agent is 0.01-0.02 part by mass. The pressure-sensitive adhesive is good in stripping force and retention force when being attached to a mica plate, and can meet the attachment requirement of the mica plate.