33results about How to "Extrusion resistant" patented technology

The invention relates to an improved air packaging device. Two layers of thermoplastic films are subjected to secondary thermoplastic packaging to form a stereoscopic packaging body which can be sealed. The improved air packaging device comprises a plurality of independent seal air chambers and a main passage, wherein the main passage is provided with an air inlet; and each seal air chamber is communicated with the main passage by a check valve formed by two layers of films. The improved air packaging device is characterized in that the check valve and the main passage for inflating the check valve are formed by carrying out thermoplastic packaging on the two layers of films and one layer of thermoplastic film of the packaging body into a whole and can be arranged in any position of the seal air chambers. Meanwhile, because the two layers of check valve films are only fixed on any layer of thermoplastic film, and the check valve films are adhered to the thermoplastic film after inflated and do not bear any tension, the tearing risk does not exist, and the safety of the packaging device is greatly improved.

The invention relates to an air packing device. Two layers of thermoplastic films form a space which can store air through thermoplastic process in two steps, and the space comprises a plurality of independent airproof air chambers and a main channel, wherein the main channel is provided with an air inlet, and each airproof air chamber is communicated with the main channel by a check valve formed by two layers of films. The air packing device is characterized in that the main diameters of the airproof air chambers are different. The invention can greatly reduce the transportation space and the transportation cost by a method of direct forming at the using site of a user, thereby solving the problem of overhigh cost due to the long-distance transportation of packing material. The air packing device is additionally provided with the buffering at the major parts and is effectively reduced in the volume by reducing air columns at a plurality of parts that do not need more protections, thereby reducing the transportation cost.

The invention relates to an air package device with a transverse air valve. A three-dimensional package body capable of sealing air is formed by two layers of thermoplastic films through secondary thermoplastic sealing, and the air package device comprises a plurality of independent sealing air chambers and a main passage, wherein the main passage is provided with an air inlet, each sealing air chamber is communicated with the main passage through a one-way valve air inlet at an air inlet sealing line part of the one-way valve formed by the two layers of one-way valve films, a plurality of outlet pre-setting points are arranged at the outlet of the one-way valve, the pre-setting points of the outlet of the one-way valve are discontinuous straight lines, and broken points in the middle of the straight lines provide air outlet passages for each one-way valve. The air package device of the invention can reduce the height of the one-way valve films because of the adoption of the transverse air valve in one aspect, and greatly save the cost of the one-way valve films. In addition, the universality of the transverse air value is high, and unlike the traditional one-way valve which needs to correspondingly use one mold according to the diameter of the air chambers, the package devices of air chambers in various widths can use one set of one-way valve mold, thus the cost of the mold is reduced.

The invention relates to a vacuum pipe paper box device. The vacuum pipe paper box device comprises a packaging box body. A plywood tray is arranged at the bottom of the packaging box body. The vacuum pipe paper box device is characterized in that one or two or more layers of packaging linings used for packaging vacuum pipes are arranged in the packaging box body; the packaging lining comprises a lower fixing part, an isolating and blocking part and an upper fixing part; in the blocking part, a plurality of cavities used for containing the vacuum pipes are formed through the staggered arrangement of transverse stop pieces and longitudinal stop pieces, the upper edges of the transverse stop pieces protrude out of the upper edges of the longitudinal stop pieces to form transverse connecting pieces, and the lower edges of the longitudinal stop pieces protrude out of the lower edges of the transverse stop pieces to form longitudinal connecting pieces; the upper fixing part comprises a plurality of transverse fixing pieces arranged in the longitudinal direction, and each transverse fixing piece is clamped between the corresponding two transverse connecting pieces; and the lower fixing part comprises a plurality of longitudinal fixing pieces arranged in the transverse direction, and each longitudinal fixing piece is clamped between the corresponding two adjacent longitudinal connecting pieces. According to the vacuum pipe paper box device, the inventory area can be reduced, resources are saved, and a protection function is achieved in the transporting process.

The invention discloses a corrosion-resistant plastic-steel door and window which is formed by combining an uppermost-layer metal alloy layer, a middle-layer anticorrosion layer and a lowermost-layerchromium carbide alloy layer. A silicon alloy is adopted as the metal alloy layer, and the chromium carbide alloy layer comprises carbon, manganese, sulphur, aluminum, steel, chrome and iron. The metal alloy layer accounts for 21-37% of the corrosion-resistant plastic-steel door and window in total weight, the anticorrosion layer accounts for 18-25% of the corrosion-resistant plastic-steel door and window in total weight, and the chromium carbide alloy layer accounts for 45-54% of the corrosion-resistant plastic-steel door and window in total weight. The corrosion-resistant plastic-steel doorand window is resistant to extrusion, high in hardness, good in abrasion resistance, not prone to being corroded, long in service life and good in heat preservation.

The invention relates to a seamless connector, in particular to a flared type seamless connector with a composite ring. The flared type seamless connector with the composite ring has the characteristics of being wear resistant, corrosion resistant, high in strength and extrusion resistant; and in the meantime, the seamless connector is further characterized by being light in weight, simple in structure, easy to machine, low in the fabrication cost, easy to recycle in an environment-friendly manner, easy to popularize and easy to install and transport. The flared type seamless connector with the composite ring comprises a connection pipe, a first lining ring and a second lining ring. A flared opening is arranged at an end of the connection pipe. A first shoulder portion is arranged at the connecting position of the flared opening and the connection pipe. A first abutting-connected portion which is connected with the inner wall of the flared opening in an abutting manner is arranged at an end of the first lining ring, and a second shoulder portion is arranged at the other end of the first lining ring. A support portion for supporting the second lining ring is arranged on one side ofthe second shoulder portion. A second abutting-connected portion which is connected with the inner wall of the flared opening in an abutting manner is arranged on the periphery of the second lining ring. One end of the second lining ring is connected with the second shoulder portion in an abutting manner, and the other end of the second lining ring is connected with the first shoulder portion in an abutting manner.