70 results about "Puncture resistance" patented technology

The invention discloses a stab-resistant rubber, a preparation method of the stab-resistant rubber and a stab-resistant tire, the stab-resistant rubber comprises the following components in percentage by weight: 40-60% of butyl rubber, 5-15% of aramid fiber, 10-15% of nano silicon dioxide, 10-20% of plasticizer, 1-3% of vulcanizing agent and 5-10% of additive, and the additive comprises an anti-aging agent, an accelerant and a filler which are mixed. The puncture resistance of the puncture-proof rubber is remarkably improved, puncture of a tire by a sharp object can be effectively prevented, and the risks of tire air leakage and tire burst are greatly reduced.

Disclosed in the present invention are a puncture-resistant fabric structure having both comfort and puncture-resistant performance, and a puncture-resistant glove. The puncture-resistant fabric structure comprises an inner layer, an outer layer, and a puncture-resistant layer located between the inner layer and the outer layer; the edges of the inner layer and the outer layer are connected together; the puncture-resistant layer comprises a body and a plurality of lugs provided on at least a partial area of the edge of the body, and the area is referred to as a connecting area; the lugs are fixed to connecting portions of the inner layer and the outer layer; and the edge of the body located in the connecting area is not connected to the inner layer and the outer layer. The puncture-resistant layer of the present invention is connected to the inner layer and the outer layer by means of the lugs, so that the puncture-resistant layer is locally fixed. During use, the puncture-resistant layer can remain in a predetermined position without slipping, and inward curling of the puncture-resistant layer is also prevented, thereby ensuring the reliability of puncture resistance. In addition, the present invention is applied to a human body joint part, and stretching by means of the lugs can be achieved during movement of the human body joint without hindering the joint movement, so that any puncture-resistant material having no elasticity or very limited elasticity can be used at a position having a high flexibility requirement for human body movement.

Transverse ribs and vertical ribs are arranged in a plate frame, latticed reinforcing ribs are formed by the transverse ribs and the vertical ribs, an inner-layer glass fiber plate is arranged on each of two sides of each reinforcing rib, a base plate is arranged on the outer side of each inner-layer glass fiber plate, an outer-layer glass fiber plate is arranged on the outer side of each base plate, a stab-proof panel is arranged on the outer side of each outer-layer glass fiber plate, and the stab-proof panel is arranged on the outer side of each outer-layer glass fiber plate. Four edges of the inner-layer glass fiber plate, the base plate, the outer-layer glass fiber plate and the puncture-proof panel are fixedly connected with the plate frame; protruding blocks are arranged on the inner side of the inner-layer glass fiber plate in an array mode. By means of the composite structure design, high strength, high rigidity and high puncture resistance of the partition plate are achieved. Meanwhile, the overall rigidity and puncture resistance of the partition plate are further enhanced through the design of the protruding blocks, and in addition, the chemical stability and wear resistance of the partition plate are guaranteed through material selection of the base plate and the puncture-proof face plate.

The puncture resistance test device comprises a supporting table, a supporting frame is mounted at the upper end of the supporting table, a mounting disc is rotationally connected to the inner side of the upper end of the supporting frame, and a hydraulic rod is mounted at the upper end of the mounting disc; a positioning plate is mounted at the upper end of the annular groove piece; a through groove structure is formed in the inner side of the positioning plate, a mounting plate is arranged on the upper side of the positioning plate, and a plurality of positioning needles are evenly fixed to the lower end of the mounting plate. The inner side of the mounting plate is provided with hole-shaped structures corresponding to spikes on the lower side of the puncturing mechanism. According to the puncture resistance test device provided by the invention, the puncture conditions with different densities can be simulated by arranging the positioning needles with different distribution densities, so that the puncture resistance of the fire protection clothing under different conditions can be comprehensively tested. In addition, an annular mounting groove piece in the device is matched with a filling groove, so that particulate matters can be filled in the testing process, the actual use environment is further simulated, and the testing authenticity is improved.

The invention relates to the field of power element detection, in particular to an intelligent detection device for a power cable, which comprises a base, a vertical frame and the like, the vertical frame is connected with a lifting assembly; the lifting assembly is provided with a translation assembly, and the translation assembly is provided with a clamping assembly used for clamping and fixing the two ends of a cable. The impact block freely falls to impact the cable, after the cable is impacted, the impacted part of the cable can be impacted on the pointed cone part of the conical block, the situation that the cable is placed on a rubble ground and smashed by an external stone and other objects is simulated, whether the sheath is damaged or not is tested, and therefore the impact resistance of the cable is tested while the impact resistance of the cable is tested. The puncture resistance test is synchronously carried out, the method is close to the actual use scene of the cable, and the test is more authentic.

This utility model belongs to the field of tire processing technology, specifically relating to a high-saturation buoyancy agricultural tire. It includes a bead, sidewall, and crown. The crown consists of tread blocks and tread grooves. The tread blocks are composed of symmetrical patterns of varying areas, with a tread saturation of 50%-52%; the tread depth is 15mm-28mm; the tread groove angle is 16°-20°, and the groove bottom curvature is 3mm-6mm; the longitudinal arc Rc of the tread blocks is 16mm-30mm, the transverse arc Rd=Rc-2mm, and the connecting reverse arc Re is 90mm-130mm. This utility model increases the contact area through high saturation, reducing ground pressure and allowing the tire to "float" on the ground, minimizing damage to grasslands. Combined with shallow depth, symmetrical distribution, and optimized groove design, it improves traction, self-cleaning properties, and wear and puncture resistance, making it suitable for agricultural operations such as lawns and grasslands where surface protection is required.

The utility model discloses a high sharpness injection needle, including needle tube and needle tip, the needle tip adopts three -stage tapering type multi -edge surface structure, and this three -stage tapering type multi -edge surface structure is composed of main cutting part, transition part and micro blade part, the main cutting part includes three symmetrical distribution's first inclined plane, and every first inclined plane bifurcates two second inclined planes to form transition part, and every second inclined plane bifurcates two third inclined planes to form micro blade part, the needle tip surface is equipped with a plurality of micro -groove, and the third inclined plane intersection of on micro blade part forms nanometer -class blade edge, and this blade edge edge is equipped with periodic micro sawtooth. The utility model discloses a needle tip is three -stage tapering type multi -edge surface structure, and the puncture resistance is reduced in stages, and the pain feeling is reduced, sets up micro sawtooth and can reduce the tissue contact area through " point cutting", and the local stress concentration when puncturing, and then delay passivation, sets up micro -groove and can guide the tissue fluid flow, destroys the negative pressure adsorption effect, and improves the needle insertion smoothness.

This invention provides a protective toeboard compression resistance testing device for work shoes, belonging to the field of toeboard testing. It includes: a worktable; and a striking assembly comprising a shaft, a cradle, and a striking hammer. Two side plates are fixedly mounted on the worktable, and the shaft rotatably connects to both side plates. The shaft also movably connects to the cradle, and the striking hammer is located at one end of the cradle. A driving assembly is provided on the worktable to drive the cradle to swing. This invention achieves multi-dimensional testing of toeboard impact resistance, multi-intensity puncture resistance, and lateral compression resistance, significantly improving testing efficiency and accuracy, and meeting the needs of evaluating the protective performance of work shoes under complex working conditions.

Recyclable, paper-based packaging structures and articles comprise extensible or semi-extensible paper layer with an anisotropy ratio in the range of 0.67 to 1.5 and a polymer extrusion coating layer. Methods for forming same are also provided. The structures and articles have a puncture resistance of 3 lbf or greater. Recyclable, paper-based packaging structures and articles and methods are formed using a polymer extrusion coating layer disposed on one side of an extensible or semi-extensible paper layer having an anisotropy ratio in the range of 0.67 to 1.5. A second polymer extrusion coating layer is disposed on a second side of the paper substrate layer. Advantageously, the paper substrates have a puncture resistance in the range of 3 lbf to 13.5 lbf.

The utility model provides a tire test bench, which relates to the technical field of tire puncture resistance testing and comprises a test bench, an inclined bench, a hydraulic cylinder, a translation turnover assembly, a cylinder, a through hole, a fixing assembly, a fixing frame, a puncture assembly and a spraying assembly. The device can automatically perform puncture operation on a tire body and spray water after puncture is finished to check and know the puncture resistance of the tire body, and different areas of the tire body can be replaced for puncture in the test process, so that the test area is more comprehensive, meanwhile, the ascending and descending of the tire do not need to be completed manually, and the test efficiency is improved. Therefore, the labor intensity is obviously reduced, and the anti-pricking performance testing process of the tire body is better.

The invention discloses a tire puncture resistance detection device, and relates to the technical field of tire testing. The tire puncture resistance detection device comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a fixing frame, the outer side of the fixing frame is fixedly connected with a connecting plate, the left side of the connecting plate is fixedly connected with a connecting rod, the left end of the connecting rod is fixedly connected with a positioning disc, and the left side of the fixing frame is provided with a puncture unit. Two fixing blocks are fixedly connected to the upper side of the bottom plate, electric push rods are fixedly connected to the outer sides of the two fixing blocks, clamping blocks are fixedly connected to the outer ends of the electric push rods, and the puncture unit comprises a side plate. Through the arrangement of the bottom plate, the clamping block, the side plate, the hydraulic cylinder and the puncture needle, puncture testing can be conveniently conducted on the tire, through the lifting plate, the sliding block, the bottom block, the protective cover, the first inclined plate and the contact cover, double protection can be conveniently conducted on the splashing puncture needle through the contact cover and the protective cover, accidents are avoided, and the safety of the device is improved.

The application discloses a tire for all-terrain ATV, comprising a tire body, a tire tread of the tire body is composed of side grooves and middle grooves, the side grooves are composed of first block rings, the middle grooves comprise main grooves and main side grooves, the main side grooves are arranged on both sides of the main grooves, the main grooves are gear-shaped annular patterns connected head to tail, the main side grooves are composed of second block rings, equal intervals are formed between the side grooves and the main side grooves and between the main side grooves and the main grooves, first openings are formed at groove corners of the main grooves, and prismatic blocks are formed at the first openings, so that the tire has improved ground adhesion, especially excellent climbing ability, the prismatic blocks arranged at the first openings play a supporting role of the tire tread and the ground during driving, the tire has improved puncture resistance, and has certain aesthetic property.

The invention relates to a puncture-resistant flash medical protective sheet, which is characterized in that the raw material of the flash medical protective sheet comprises polyethylene, and the gram weight of the flash medical protective sheet is greater than 40g / m < 2 >; the penetration degree of the flash evaporation medical protective sheet is 0.3 to 3 (KN.s) / mm; the penetration degree is equal to puncture strength * ventilation resistance; the invention discloses a method for testing the puncture resistance of a plastic film and a thin sheet according to the puncture strength test standard GB / T 37841-2019. The test standard of the air permeability resistance is GBT 458-2008 measurement of the air permeability of paper and paperboards, and the air permeability resistance is used for measuring the time for passing 100 ml of air. The medical flash evaporation protective sheet has the advantages of better puncture resistance and air permeability.

The utility model provides a kind of puncture prevention barrier layer structure for battery aluminum plastic film, it is related to soft package battery field, and it includes: aluminum plastic film body, the inner wall of aluminum plastic film body is equipped with battery body, the aluminum plastic film body includes cast polypropylene film, aluminum foil layer, puncture prevention layer and nylon layer, the surface of puncture prevention layer is installed in the inner wall of nylon layer.The utility model, the material of puncture prevention layer is aramid fiber, it is coated on substrate to make aramid coating diaphragm, has very strong puncture resistance, the nylon layer installed on the surface of puncture prevention layer protects middle layer aluminum foil from scratching, with puncture resistance, the aluminum plastic film has stronger puncture resistance by combining puncture prevention layer and nylon layer, fixed shell is installed in the corner of aluminum plastic film body, screwing thread sleeve drives fastening rod one and fastening rod two to be rotated into the inner wall of screwing thread sleeve, so that adjacent two fixed shell move towards and be tightened, so that aluminum plastic film body can be better installed on the surface of battery body.

The utility model discloses a kind of puncture-proof reinforced butyl inner tube, it is related to butyl inner tube technical field, including inner tube main body, the outer side of inner tube main body is provided with puncture-proof mechanism, puncture-proof mechanism includes outer protective layer, buffer layer and air-tight layer, the outer surface of inner tube main body is fixedly connected with air valve, outer protective layer includes gradient fiber distribution layer, buffer layer includes microporous foamed adhesive layer.It can be through the intercoordination between gradient fiber distribution layer, three-dimensional netted fiber layer, honeycomb impact resistance layer, chopped carbon fiber layer and liquid butyl rubber layer, can effectively prevent sharp object puncture inner tube main body, enhance the applicability of the device, avoid vehicle in the process of road travel easily crush to various sharp objects, to easily cause damage to inner tube, need driver to stop and maintain tire, and the puncture resistance of inner tube is poor, easily cause inner tube maintenance frequency increase, lead to tire service life reduction reduces problem.

The application discloses a kind of puncture-resistant composite films, belong to composite film technical field, PA11, metallocene polyethylene, composite powder, nano aluminum powder and silane coupling agent KH560 are mixed after extrusion with double screw extruder, granulation, obtain intermediate layer masterbatch;Modified PA6 and PA6 are mixed after extrusion, granulation, obtain upper layer masterbatch;With PA11 as lower layer masterbatch, upper layer masterbatch, intermediate layer masterbatch and lower layer masterbatch are extruded into cast sheet by three-layer structure die at 220-230 DEG C;After cast sheet is treated by humidification, it is prepared into puncture-resistant composite film including upper layer, intermediate layer and lower layer by the way of two-way stretching;-NH- in PA11 can form hydrogen bond with hydroxyl in the surface modified cellulose of composite powder, play the role of physical crosslinking, help to improve the strength and puncture resistance of intermediate layer;Nano aluminum powder and metallocene polyethylene also help to improve the puncture resistance of composite film.

The utility model relates to the technical field of tire performance testing, in particular to a tire puncture resistance testing device, which comprises a bottom plate, four groups of support columns, a top plate, a plurality of rows of puncture mechanisms, a position adjusting mechanism, a moving mechanism, a lifting mechanism, a lifting plate and a mounting mechanism, and is characterized in that the four groups of support columns are connected with the top end of the bottom plate, and the top plate is connected with the top ends of the four groups of support columns; the position adjusting mechanism is installed at the bottom end of the top plate, the moving mechanism is installed at the bottom end of the position adjusting mechanism, the lifting mechanism is installed at the bottom end of the moving mechanism, and the lifting plate is connected with the bottom end of the lifting mechanism. The multiple rows of puncture mechanisms are arranged and mounted at the top end of the bottom plate, the multiple rows of puncture mechanisms are used for testing tires of different specifications and types, and each of the multiple rows of puncture mechanisms comprises a fixing plate and multiple groups of puncture needles. The utility model provides a tire puncture resistance testing device, and aims to solve the problems of inconvenience in operation, inaccurate testing result, poor universality and the like of a tire puncture resistance testing device in the prior art.

The utility model relates to the technical field of medical instruments, in particular to an edging structure for a CGM guide needle, which comprises an edge portion, the edge portion is provided with a first edge face and a second edge face, one end of the first edge face intersects with one end of the second edge face to form a cutting edge line, and the cutting edge line, the first edge face and the second edge face form an edge point. The cross section of the blade point is triangular and is used for reducing the puncture resistance of the blade part; a triangular surface is formed between the other end of the first blade surface and the other end of the second blade surface; the first cutting edge face, the second cutting edge face, the cutting edge point formed by the first cutting edge face and the second cutting edge face and the triangular face can effectively improve puncture efficiency and stability of the CGM guide needle in the using process, and a structural basis is provided for accurate implantation of a CGM sensor.

The polyurethane foaming vibration isolation pad with the waterproof layer comprises a protective layer, a vibration isolation layer and the waterproof layer, the protective layer is a fabric layer with a flexible interface formed by a woven structure, and the vibration isolation layer is a polyurethane foaming layer which is of a honeycomb structure and has the functions of absorbing vibration energy and buffering impact loads. The upper end face of the waterproof layer is of a wavy structure with wave crests and wave troughs, and the bottom face and the top face of the vibration isolation layer react with the upper end face of the waterproof layer and the bottom face of the protective layer to form an integrated structure without interface layering. The protective layer, the vibration isolation layer and the waterproof layer are combined into a whole to form the vibration isolation pad, the vibration isolation pad has the functions of wear resistance, puncture resistance, vibration absorption and water resistance, the performance limitation of a single material is broken through, the construction procedures are reduced, the construction period is shortened, the construction efficiency is improved, and the vibration isolation pad is suitable for various track foundations, building foundations, precise instrument bases and the like. The modular design supports rapid laying, and the cost is reduced.

The invention discloses a stainless steel pipe with tissue low-resistance puncture and self-lubricating functions and a machining method, and relates to the field of medical instruments. Comprising a pipe base body, a bionic microstructure tip is arranged at the puncture end of the pipe base body, and an in-situ activation lubricating layer is arranged on the outer surface of the pipe base body; the bionic microstructure tip comprises a first-stage skin breaking area and a second-stage expanding area which are sequentially arranged in the puncture direction. The first-stage skin breaking area is a nanoscale sharp cutting edge; the second-stage expansion area is a spiral or stepped micro-groove array arranged on the outer surface of the pipe; the in-situ activation lubricating layer is a hydrophilic polymer composite gel coating which can be rapidly hydrated when encountering tissue fluid or blood. The method has the advantages that puncture resistance is remarkably reduced, tissue damage is reduced, instant self-lubrication is achieved, and the coating is stable and controllable.

The utility model relates to the field of packaging bag detection, and discloses a packaging bag anti-puncture detection device, which comprises a case, a detection mechanism, a detection mechanism, a detection mechanism and a detection mechanism, the detection mechanism comprises a power motor, a disc, a placing plate, a connecting frame, a sliding plate, a magnet, a pressing plate, a side plate, a spring, a vertical rod and an electromagnet; the power motor is fixedly installed on the inner wall of the top of the machine box, the output end of the power motor is fixedly connected with the disc, the containing plate is fixedly installed at the top end of the disc, the connecting frame is fixedly installed at the top of the containing plate, the sliding plate is vertically installed on the connecting frame in a sliding mode, and the magnet and the pressing plate are both fixedly connected with the sliding plate. The side face of the side plate is fixedly connected with the sliding plate, the spring is fixedly installed between the side plate and the connecting frame, and the bottom end of the vertical rod is fixedly connected with the electromagnet. The packaging bag detection device has the following advantages and effects that the packaging bag to be detected is rapidly detected, the use is relatively convenient, and the detection efficiency is effectively improved.

The utility model relates to the field of tires, in particular to a tire with good puncture resistance, which comprises a tire body and a puncture-proof layer, the puncture-proof layer is used for improving the puncture resistance of the tire body and is attached to the inner wall of the tire in a vulcanization manner; and an anti-falling structure is arranged between the puncture-proof layer and the tire inner wall. According to the anti-puncture tire, the anti-puncture layer is attached to the tire inner wall of the tire body, the anti-puncture layer adopts the nano adhesive tape, and the thickness of the nano adhesive tape is one fifth to one third of that of the tire wall of the tire body, so that the anti-puncture capability of the whole tire body can be improved, and the nano adhesive can block puncture holes even if puncture occurs and a puncture object is pulled out, so that the tire does not leak air. And the whole tire wall is not too thick after vulcanization and lamination, so that the puncture-proof capability is ensured, and the light weight of the whole tire is facilitated.

The utility model belongs to the field of puncture resistance of plastic films, and relates to a puncture resistance testing device of a plastic film, which comprises a bottom plate, an L-shaped support frame fixedly connected to the rear side of the upper part of the bottom plate, an electric cylinder fixedly connected to the upper part of the L-shaped support frame, a puncture testing device body fixedly connected to an output shaft of the electric cylinder, and a moving assembly arranged on the upper part of the bottom plate, a moving assembly is arranged on the base plate, a positioning assembly is arranged on the moving assembly, an environment adjusting device is fixedly connected to the upper portion of the base plate, the moving assembly comprises a moving box, the lower portion of the moving box is fixedly connected with the upper portion of the base plate, and a lead screw is movably connected to the front side of an inner cavity of the moving box through a rotating pair. When the equipment is used, the position of a plastic film can be randomly adjusted, so that multiple positions of the plastic film can be tested, and when the equipment is used for testing the plastic film, the plastic film can be positioned.

The invention relates to the field of fabric processing, in particular to a fabric and a processing method thereof.The processing method includes the following steps that firstly, yarn is woven into the fabric through a weaving machine; 2, cutting and extracting the woven fabric into a plurality of parts; step 3, fixing a plurality of parts of fabrics on a detection device; step 4, carrying out anti-puncture detection on the multiple parts of fabrics by utilizing a detection device; 5, cutting detection is conducted on the multiple parts of fabric through a detection device; step 6, performing anti-puncture and cutting detection of different strengths on the fabric by adjusting the detection device; 7, performing anti-puncture and cutting detection on the fabric at different angles by adjusting the detection device; 8, rolling the fabric which is detected to be qualified; according to the invention, puncture resistance and cutting resistance of the fabric can be detected at the same time.

The present invention relates to a puncture resistant inner tube for pneumatic tires. The inventive device comprises an outer tube and at least one inner tube, wherein the cross-sectional circumference of the inner tube is greater than that of the outer tube. This unique design allows the inner tube to move out of the way in the event of a puncture, providing enhanced safety and reliability. By utilizing excess material from the inner tube to create fold-like structures when pressurized, the invention provides a self-compensating mechanism for punctures. The inventive device can be used in various applications, including pneumatic tires, safety devices such as avalanche protection systems, life jackets, and other containers that require puncture resistance.

This utility model discloses a puncture-resistant battery, belonging to the field of battery technology. The puncture-resistant battery includes a square casing and an insulating film. The insulating film includes a substrate layer and an adhesive layer. The adhesive layer includes a first adhesive layer, an aramid fiber layer, and a second adhesive layer stacked sequentially. The second adhesive layer is used to bond to the outer surface of the square casing, and the first adhesive layer is bonded between the substrate layer and the aramid fiber layer. This puncture-resistant battery can improve the puncture resistance of the entire insulating film through the aramid fiber layer with good puncture resistance, and the first and second adhesive layers with buffering and absorption effects, thereby improving the insulation protection performance of the entire puncture-resistant battery and increasing the overall coating efficiency.

This invention discloses a device for testing the puncture resistance of Teflon films, relating to the field of film puncture testing. The device includes: a machine base, a hollow frame fixed to the upper end of the machine base, and a profile upright. The profile upright is internally fitted with a vertically movable testing end, and a puncture needle is fixedly fitted to the end of the testing end. A limiting mold is provided above the hollow frame. In this invention, through the cooperation of a pressing unit and an elastic support unit, the limiting mold and the support plate are separated when no puncture test is being performed. At this time, the position of the support plate can be adjusted so that a Teflon film sample on the support plate is positioned between the two. Driven by the pressing unit, the two clamp the Teflon film sample, thus performing a puncture test. For subsequent sample tests, only the position of the support plate needs to be adjusted when the limiting mold and the support plate are separated, eliminating the need for manual disassembly and assembly of the clamping mold.

The utility model relates to the technical field of packaging shells, in particular to a high-strength corrosion-resistant ceramic packaging shell, which comprises a ceramic packaging shell main body, the ceramic packaging shell main body consists of a packaging bottom shell and a packaging top cover, the packaging bottom shell is provided with a reinforcing turning plate, the reinforcing turning plate is provided with a reinforcing slot, a main fixing and bonding layer is arranged in the reinforcing slot, and the main fixing and bonding layer is provided with a sealing cover. The packaging top cover is provided with a reinforcing insertion column, the reinforcing insertion column is provided with a bearing rib plate, the bearing rib plate is provided with an auxiliary fixing and bonding layer, the packaging bottom shell and the packaging top cover are each internally provided with an anti-puncture inner layer, and the packaging bottom shell and the packaging top cover are each provided with an anti-corrosion heat dissipation layer. The overall external extrusion resistance, deformation resistance and high strength of the packaging bottom shell and the packaging top cover on the ceramic packaging shell body are improved, the overall external puncture resistance of the packaging bottom shell and the packaging top cover on the ceramic packaging shell body is improved, and the corrosion resistance of the outer wall surfaces of the packaging bottom shell and the packaging top cover body is improved.

A glass element having a thickness from 25 μm to 125 μm, a first primary surface, a second primary surface, and a compressive stress region extending from the first primary surface to a first depth, the region defined by a compressive stress σI of at least about 100 MPa at the first primary surface. Further, the glass element has a stress profile such that it does not fail when it is subject to 200,000 cycles of bending to a target bend radius of from 1 mm to 20 mm, by the parallel plate method. Still further, the glass element has a puncture resistance of greater than about 1.5 kgf when the first primary surface of the glass element is loaded with a tungsten carbide ball having a diameter of 1.5 mm.

This utility model discloses a flexible medium-sized bulk container, relating to the field of bulk container technology. It aims to solve the problems of existing flexible packaging containers, such as simple structure, susceptibility to damage, inability to fold, insufficient puncture resistance and moisture protection, easy expansion and deformation under load, and insufficient overall structural strength, filling stability, and practicality. The key technical solution includes a polypropylene shell, with packaging straps wrapped around its exterior. These straps consist of lifting sections and supporting sections. Four lifting sections are located at the four corners of the polypropylene shell. A cardboard layer is placed inside the polypropylene shell, and an outer cover is fastened to the ends of the shell. Non-woven fabric is placed on the inner bottom of the cardboard layer. This achieves multi-layered filling protection, high structural strength, good sealing, high stability during transport and lifting, and strong overall practicality.